The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1947 - 1959 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 05-24-2020, 02:06 PM   #26
jwhotrod
Registered User
 
Join Date: Oct 2018
Location: DeKalb, IL
Posts: 152
Re: Elecrtical?

orange 12v is probably a switched battery connection, that means there is power on that wire whenever the battery is connected. pink 12v is ignition switched 12v the power on that wire should shut off with the ignition. orange is usually the hot side 12v feed to the stop light switch, that must have 12volts always so your brakelights work engine on or off.
jwhotrod is offline   Reply With Quote
Old 05-24-2020, 03:10 PM   #27
J48chevy
Registered User
 
J48chevy's Avatar
 
Join Date: Jun 2013
Location: Michigan
Posts: 304
Re: Elecrtical?

Quote:
Originally Posted by jwhotrod View Post
orange 12v is probably a switched battery connection, that means there is power on that wire whenever the battery is connected. pink 12v is ignition switched 12v the power on that wire should shut off with the ignition. orange is usually the hot side 12v feed to the stop light switch, that must have 12volts always so your brakelights work engine on or off.
Yes I ended up using pink 12v ignition for power to my oil/volt/temp/gas gauge. No idea why the brown wire to rear lights is causing issue with dash lights staying on when connected to headlight switch. Disconnect and dash light works fine.
__________________
My Build: 1948 Chevy Thriftmaster. Mustang 2 front end, LS1, 700R trans, Explorer Rear end.
http://http://67-72chevytrucks.com/vboard/showthread.php?t=606670
J48chevy is offline   Reply With Quote
Old 05-24-2020, 04:07 PM   #28
mongocanfly
Post Whore

 
mongocanfly's Avatar
 
Join Date: May 2015
Location: Alabama
Posts: 14,557
Re: Elecrtical?

How do you have your tail lights wired?
__________________
Mongo...aka Greg

RIP Dad
RIP Jesse

1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598
Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334
Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563
2023 Chevy Z71..daily driver
mongocanfly is offline   Reply With Quote
Old 05-24-2020, 07:50 PM   #29
J48chevy
Registered User
 
J48chevy's Avatar
 
Join Date: Jun 2013
Location: Michigan
Posts: 304
Re: Elecrtical?

Quote:
Originally Posted by mongocanfly View Post
How do you have your tail lights wired?
I am running led tail lights. They are 3 wire. One grey, red, white. White is ground and have the grey and red together. Then yellow wire from harness is left rear and green wire from harness is right rear. Brown wire labeled park lights runs to rear from switch and is tied into both lights.

So basically have red/grey on each light connected to yellow/brown for left rear and green/brown for right rear. White for both grounded to frame.
__________________
My Build: 1948 Chevy Thriftmaster. Mustang 2 front end, LS1, 700R trans, Explorer Rear end.
http://http://67-72chevytrucks.com/vboard/showthread.php?t=606670
J48chevy is offline   Reply With Quote
Old 05-24-2020, 08:50 PM   #30
mongocanfly
Post Whore

 
mongocanfly's Avatar
 
Join Date: May 2015
Location: Alabama
Posts: 14,557
Re: Elecrtical?

I had to draw it out ..is this how you have it?
assume the blue is your white ground
right light----red/green---gray/brown---(blue)white grounded to frame
left light-----red/yellow---gray/brown---(blue)white grounded to frame
Attached Images
 
__________________
Mongo...aka Greg

RIP Dad
RIP Jesse

1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598
Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334
Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563
2023 Chevy Z71..daily driver
mongocanfly is offline   Reply With Quote
Old 05-24-2020, 09:18 PM   #31
J48chevy
Registered User
 
J48chevy's Avatar
 
Join Date: Jun 2013
Location: Michigan
Posts: 304
Re: Elecrtical?

Quote:
Originally Posted by mongocanfly View Post
I had to draw it out ..is this how you have it?
assume the blue is your white ground
right light----red/green---gray/brown---(blue)white grounded to frame
left light-----red/yellow---gray/brown---(blue)white grounded to frame
Yes. I have tried every color connection. Now you have me thinking it could be a tail light issue. As you can tell wiring is not my thing. For right now just have trailers led taillights I am using.
__________________
My Build: 1948 Chevy Thriftmaster. Mustang 2 front end, LS1, 700R trans, Explorer Rear end.
http://http://67-72chevytrucks.com/vboard/showthread.php?t=606670

Last edited by J48chevy; 05-24-2020 at 09:29 PM.
J48chevy is offline   Reply With Quote
Old 05-24-2020, 09:29 PM   #32
mongocanfly
Post Whore

 
mongocanfly's Avatar
 
Join Date: May 2015
Location: Alabama
Posts: 14,557
Re: Elecrtical?

you aint alone..i hate wiring...
try disconnecting one brown taillight wire at a time at the light and see if it has a effect on it
since disconnecting the brown wires to the taillight fixes the problem , it may be in the light
__________________
Mongo...aka Greg

RIP Dad
RIP Jesse

1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598
Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334
Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563
2023 Chevy Z71..daily driver
mongocanfly is offline   Reply With Quote
Old 05-24-2020, 09:44 PM   #33
J48chevy
Registered User
 
J48chevy's Avatar
 
Join Date: Jun 2013
Location: Michigan
Posts: 304
Re: Elecrtical?

Quote:
Originally Posted by mongocanfly View Post
you aint alone..i hate wiring...
try disconnecting one brown taillight wire at a time at the light and see if it has a effect on it
since disconnecting the brown wires to the taillight fixes the problem , it may be in the light
Yeah I have tried just using one light. When I have it hooked like your picture the tail lights stay on. I even tried gray/green gray/yellow and brown red. Same issue even brighter. Dash lights not on but now tail lights stuck on. I am sure it is something simple just a pain in the a$$ to me.

You would think 3 wires coming from harness to rear. Yellow (left rear)green (right rear) and brown (from switch). Tail lights have red, gray, white. Evidently something I am missing. After 3 days I am about over it.
__________________
My Build: 1948 Chevy Thriftmaster. Mustang 2 front end, LS1, 700R trans, Explorer Rear end.
http://http://67-72chevytrucks.com/vboard/showthread.php?t=606670
J48chevy is offline   Reply With Quote
Old 05-24-2020, 09:53 PM   #34
J48chevy
Registered User
 
J48chevy's Avatar
 
Join Date: Jun 2013
Location: Michigan
Posts: 304
Re: Elecrtical?

Found this on line.

On a three wire pigtail that's being used on a stop/turn/taillight, the red wire carries the brake/turn signal circuit, the black wire carries the running lamp circuit and the white wire provides the ground connection.

If that is correct then red would be connected to yellow and green from harness. Black or in my case gray would be connected to brown wire and white is ground.

Problem is my lights stay on when I connect the battery????

Also found this. Wonder if my flasher relay is the issue?

Using Automotive LED Lights is a bit different than using incandescent automotive bulbs. You can expect the wire colors and power consumption to be a bit of a surprise. Being that LED lights use far less power than standard automotive bulbs, if you plan to install LED lights as blinkers/turn signals, you should replace the standard thermal flasher relay with an LED or electronic flasher relay. LED bulbs use such little power that they won’t create enough heat to trip a standard thermal flasher.
__________________
My Build: 1948 Chevy Thriftmaster. Mustang 2 front end, LS1, 700R trans, Explorer Rear end.
http://http://67-72chevytrucks.com/vboard/showthread.php?t=606670
J48chevy is offline   Reply With Quote
Old 05-24-2020, 10:00 PM   #35
mongocanfly
Post Whore

 
mongocanfly's Avatar
 
Join Date: May 2015
Location: Alabama
Posts: 14,557
Re: Elecrtical?

if the running lights (brown wire)are staying on then the only way they'll get power is thru the light switch...
which has me thinking switch
sounds like your red/yellow red/green isn't causing a issue...which don't go thru the light switch....
its just the brown from the switch to the taillight
do you have a meter or test light? unplug brown wire from switch and with switch off check for voltage from that pin to ground
__________________
Mongo...aka Greg

RIP Dad
RIP Jesse

1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598
Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334
Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563
2023 Chevy Z71..daily driver
mongocanfly is offline   Reply With Quote
Old 05-24-2020, 10:09 PM   #36
mongocanfly
Post Whore

 
mongocanfly's Avatar
 
Join Date: May 2015
Location: Alabama
Posts: 14,557
Re: Elecrtical?

you might even try unplugging all the wiring on the light switch...except your 12v power and the brown wires and see if there is still a issue..if there is no issue, then start plugging the wires back in 1 at a time until the issue starts again
__________________
Mongo...aka Greg

RIP Dad
RIP Jesse

1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598
Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334
Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563
2023 Chevy Z71..daily driver
mongocanfly is offline   Reply With Quote
Old 05-24-2020, 10:19 PM   #37
J48chevy
Registered User
 
J48chevy's Avatar
 
Join Date: Jun 2013
Location: Michigan
Posts: 304
Re: Elecrtical?

Quote:
Originally Posted by mongocanfly View Post
you might even try unplugging all the wiring on the light switch...except your 12v power and the brown wires and see if there is still a issue..if there is no issue, then start plugging the wires back in 1 at a time until the issue starts again
Will give that one a try. I did email American Auto Wire as well to see if they can turn me in right direction. Like I said 3 days of this and I am still stumped. Thanks for the advise.
__________________
My Build: 1948 Chevy Thriftmaster. Mustang 2 front end, LS1, 700R trans, Explorer Rear end.
http://http://67-72chevytrucks.com/vboard/showthread.php?t=606670
J48chevy is offline   Reply With Quote
Old 05-26-2020, 10:40 AM   #38
Tempest67
Registered User
 
Tempest67's Avatar
 
Join Date: Sep 2018
Location: Ontario
Posts: 780
Re: Elecrtical?

I think it is your LED tail lights. They do not provide enough resistance for the switch to work properly.

According to my Kwikwire Instructions, you need to add a resistor to each LED wire circuit, or change to an 'Electronic LED Flasher'


I would disconnect your tail lights, add some 1157 bulbs (2 filament) and see how it works.
Tempest67 is offline   Reply With Quote
Old 05-26-2020, 12:23 PM   #39
mongocanfly
Post Whore

 
mongocanfly's Avatar
 
Join Date: May 2015
Location: Alabama
Posts: 14,557
Re: Elecrtical?

I was thinking about the LEDs to, but I think the issues they cause is when the blinker is on and wont blink from not enough resistance for the blinker relay..the blinker and taillight are on different circuits
But who knows...It may be affecting it somehow
__________________
Mongo...aka Greg

RIP Dad
RIP Jesse

1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598
Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334
Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563
2023 Chevy Z71..daily driver
mongocanfly is offline   Reply With Quote
Old 05-26-2020, 01:08 PM   #40
Tempest67
Registered User
 
Tempest67's Avatar
 
Join Date: Sep 2018
Location: Ontario
Posts: 780
Re: Elecrtical?

hmmmmmm, different circuits... good point.

I know that electricity will do strange things when not enough resistance, and maybe it is all happening at the light switch.


for peace of mind, I would add some standard 1157 sockets and bulbs and see what happens.

I know a guy who added those little red LED's to the bedrolls on his 54, and he needed the resistors to make it work
Tempest67 is offline   Reply With Quote
Old 05-26-2020, 06:03 PM   #41
J48chevy
Registered User
 
J48chevy's Avatar
 
Join Date: Jun 2013
Location: Michigan
Posts: 304
Re: Elecrtical?

Well after 3-4 days of frustration I finally figured out issue. Yes almost embarrassed to say but the hazard switch was pushed in once I pulled that out all lights working fine. Leave it up to me to do that.

The only thing that still is not working is blinkers. They activate on each light but do not flash. Other than that all is well in electrical land. Haha. Thanks everyone for help and suggestions. I wouldn’t be this far without the help of you guys on here. Great site.
__________________
My Build: 1948 Chevy Thriftmaster. Mustang 2 front end, LS1, 700R trans, Explorer Rear end.
http://http://67-72chevytrucks.com/vboard/showthread.php?t=606670
J48chevy is offline   Reply With Quote
Old 05-26-2020, 06:17 PM   #42
mongocanfly
Post Whore

 
mongocanfly's Avatar
 
Join Date: May 2015
Location: Alabama
Posts: 14,557
Re: Elecrtical?

Oh me...isnt it always the simplest thing some times....glad you figured it out...
The blinkers not blinking is most likely due to the leds... you'll need resistors to make those work..
Do like tempest suggested..wire a 1157 bulb in place of the led and see if it works..thatll let you know for sure what the issue is
Still odd that the hazard would affect the running lights and dash lights...the hazards should be on the brake light circuit..
But would explain why the flasher relay was warm..and the LEDs wont pull enough resistance to make it flash so that would be easy to miss.
__________________
Mongo...aka Greg

RIP Dad
RIP Jesse

1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598
Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334
Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563
2023 Chevy Z71..daily driver

Last edited by mongocanfly; 05-26-2020 at 06:38 PM.
mongocanfly is offline   Reply With Quote
Old 05-26-2020, 09:26 PM   #43
J48chevy
Registered User
 
J48chevy's Avatar
 
Join Date: Jun 2013
Location: Michigan
Posts: 304
Re: Elecrtical?

Quote:
Originally Posted by mongocanfly View Post
Oh me...isnt it always the simplest thing some times....glad you figured it out...
The blinkers not blinking is most likely due to the leds... you'll need resistors to make those work..
Do like tempest suggested..wire a 1157 bulb in place of the led and see if it works..thatll let you know for sure what the issue is
Still odd that the hazard would affect the running lights and dash lights...the hazards should be on the brake light circuit..
But would explain why the flasher relay was warm..and the LEDs wont pull enough resistance to make it flash so that would be easy to miss.
I think it was affecting dash lights due to me having wires crossed at first with gauges and taillights. Once I got that and checked flasher I was like you have to be kidding me. Haha.
I also read somewhere that you can replace the 2 prong flasher fuses to LED and that will help also? Wasn’t sure if I do that or the resistors. The turn signals work they just don’t flash.
__________________
My Build: 1948 Chevy Thriftmaster. Mustang 2 front end, LS1, 700R trans, Explorer Rear end.
http://http://67-72chevytrucks.com/vboard/showthread.php?t=606670
J48chevy is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 04:13 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com