Cruise control wire ID help needed - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Longhorn Man · 06-22-2003, 11:07 PM

Anyone know where this wire might go? (1970 stock cruise control) I looked on the papers mailed to me, and the stuff scanned and e-mailed to me and have not seen anything on it.
I see no place on the speed sensor there, and there is nothing close to it to hook onto...

ginter · 06-23-2003, 09:56 AM

I'll have a look at mine tonight after work. I can shoot pics also. I can't gaurantee that it will be correct since mine is non-funtional at the moment, but it might give you a clue.

One of these days I'd like to get mine working again. I'd love to see the info you have on the CC.

ginter · 06-23-2003, 01:13 PM

I went out and had a look. I don't have that brown wire at all. Just the 2 lug connector that you see in your pic. I'll still shoot a pic after work and post it.

*racedvl* · 06-23-2003, 01:38 PM

Well, Andy, looks like your gonna have to trace it and see where she goes. . . .

Longhorn Man · 06-23-2003, 05:42 PM

Yikes, that sounds like "fun".
Maybe that's why his doesn't work?
One can hope, right?

ginter · 06-23-2003, 06:11 PM

Mine doesn't work because the PO decided to disconnect all kinds of stuff from it. The speedo cable, vacuum supply, hot wire for the switch in the cab... you get the idea. But I have NO loose brown wire anywhere. I'll get a pic in a bit.

BTW, where is you vacuum supply for the CC coming from? Manifold or carb fitting?

Longhorn Man · 06-23-2003, 06:30 PM

ginter... here you go.

ginter · 06-23-2003, 10:11 PM

Thanks. That helps a little. What exactly does the vaccum hose going into the cab connect to? Mine is just hanging loose under the dash.

Here's a pic of my control unit.

ginter · 06-23-2003, 10:13 PM

Like yours, mine only has two wires on the one and only connector to the control unit. There doesn't seem to be another connector anywhere on it. There are also only two wires and the vacuum hose going into the cab.

ginter · 06-23-2003, 10:15 PM

Close up of the control unit terminal and labeling.

*racedvl* · 06-23-2003, 10:38 PM

I used to have. . . . . . . .

Longhorn Man · 06-23-2003, 11:53 PM

The hose going into the cab goes to the brake light switch I think.
I'll have to look tomorow.

ginter · 06-24-2003, 09:08 AM

Hmmmm.....

That makes sense, but my brake light switch doesn't have a fitting for a vacuum line. Probably switched out at some point by the PO. On the other hand, in that diagram you posted it looks as if the "Vacuum Release Valve" may be a seperate unit. I'd love to see a picture of the CC brake light switch and/or release valve if you can do that.

ginter · 06-24-2003, 09:16 AM

BTW longhornmail,

Does any if that info you have on the CC list the specific vacuum pressure required for the unit? I'll have to improvise a vacuum source since my manifold has been changed out.

Longhorn Man · 06-24-2003, 04:31 PM

I'll try to get a pic, and now that you mention it, i think it is in fact seperate. The CC brake light switch should have 2 places for electrical plugs, and then a seperate switch for the vacume.
Like I said, i'll try to get a pic here in a bit.
As for vac requirements...I'm not sure what it takes. There is probably a plug/bolt/allen bolt on your intake someplace that you can remove for this fitting. Every aftermarket one I have seen has holes to plug up.
Well, all the street ones anyways...but I don't think you have a tunnel ram with 2 4ppls on it.

ginter · 06-24-2003, 04:45 PM

It's an Edelbrock somethingorotheralloyjobby. I haven't looked real hard yet, but I haven't seen a plugged hole in it anywhere. I assumed th PO pulled the CC when he installed the manifold. But what do I know.

Longhorn Man · 06-24-2003, 08:07 PM

Here is the best I could do. I've had this stupid digi-cam for a year now and still can't take very good pics with it.
Oh well. My head is pretty much on the gas pedal, and the drivers door is to the bottom of the pic....for oreantation.

Rod · 06-24-2003, 09:50 PM

ginter... what years your truck and does it list cruise as an option... I saw a cruise like that a week ago and passed on it.. thought the vacuum pod was a newer style...maybe I was wrong.

ginter · 06-25-2003, 01:02 PM

My truck is a 72 Cheyenne. IIRC, longhornmail and I discussed the cruise briefly shortly after I joined the board. I'm pretty sure this is a factory CC, but it has the under dash switch, so it may have been a dealer installed unit.

longhornmail - thanks for the pic. I'm going to look at mine again here in a bit. I think I'm missing that switch though.

I saw this thread and pics of what look like it may be part of the brake disengagement circuit?

Longhorn Man · 06-25-2003, 03:48 PM

That does kinda look like the switch on the pedal, but the rest of it doens't quite look right. But they did have a few styles on these so anything goes untill we can document EVERYTHING on the CC.

ginter · 06-25-2003, 04:24 PM

My brake pedal doesn't have the bracket yours does for the shutoff. It will take me awhile to get this one figured out.

Did you figure out what that extra wire is for yet?

Longhorn Man · 06-25-2003, 04:45 PM

nope.

Haven't really tried either.

DINS 1 · 06-25-2003, 08:11 PM

the cruise on my 71 burb had a under dash switch and the cruise was listed in the glove box

ginter · 06-25-2003, 10:56 PM

For some reason, my glovebox sticker doesn't list the cruise. But it is a factory unit from all I can tell. That's why I suspect it was installed by a dealer.

jef5150 · 06-26-2003, 05:21 AM

I really wish my scanner worked on my computor!!!!!! Ive got all these diagrams and no way to send them to you......,IF ANYONE has a flatbed scanner,and a ORIGINAL,"1971 truck chassis service manual" go to Section 15,accesories,theres 6 pages of info & diagrams,,,,,,,,,,,,,,,,

06-22-2003, 11:07 PM	#1
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Cruise control wire ID help needed Anyone know where this wire might go? (1970 stock cruise control) I looked on the papers mailed to me, and the stuff scanned and e-mailed to me and have not seen anything on it. I see no place on the speed sensor there, and there is nothing close to it to hook onto... Attached Images

06-23-2003, 10:11 PM	#8
ginter Registered User Join Date: Mar 2003 Location: Denver CO. Posts: 156	Thanks. That helps a little. What exactly does the vaccum hose going into the cab connect to? Mine is just hanging loose under the dash. Here's a pic of my control unit. Attached Images

06-23-2003, 10:13 PM	#9
ginter Registered User Join Date: Mar 2003 Location: Denver CO. Posts: 156	Like yours, mine only has two wires on the one and only connector to the control unit. There doesn't seem to be another connector anywhere on it. There are also only two wires and the vacuum hose going into the cab. Attached Images

06-23-2003, 10:15 PM	#10
ginter Registered User Join Date: Mar 2003 Location: Denver CO. Posts: 156	Close up of the control unit terminal and labeling. Attached Images

06-23-2003, 10:38 PM	#11
racedvl Account Suspended Join Date: Jan 2000 Location: Woodstock, IL Posts: 7,020	I used to have. . . . . . . . Attached Images

06-23-2003, 09:56 AM	#2
ginter Registered User Join Date: Mar 2003 Location: Denver CO. Posts: 156	I'll have a look at mine tonight after work. I can shoot pics also. I can't gaurantee that it will be correct since mine is non-funtional at the moment, but it might give you a clue. One of these days I'd like to get mine working again. I'd love to see the info you have on the CC.

06-23-2003, 01:13 PM	#3
ginter Registered User Join Date: Mar 2003 Location: Denver CO. Posts: 156	I went out and had a look. I don't have that brown wire at all. Just the 2 lug connector that you see in your pic. I'll still shoot a pic after work and post it.

06-23-2003, 01:38 PM	#4
racedvl Account Suspended Join Date: Jan 2000 Location: Woodstock, IL Posts: 7,020	Well, Andy, looks like your gonna have to trace it and see where she goes. . . .

06-23-2003, 05:42 PM	#5
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Yikes, that sounds like "fun". Maybe that's why his doesn't work? One can hope, right?

06-23-2003, 06:11 PM	#6
ginter Registered User Join Date: Mar 2003 Location: Denver CO. Posts: 156	Mine doesn't work because the PO decided to disconnect all kinds of stuff from it. The speedo cable, vacuum supply, hot wire for the switch in the cab... you get the idea. But I have NO loose brown wire anywhere. I'll get a pic in a bit. BTW, where is you vacuum supply for the CC coming from? Manifold or carb fitting?

06-23-2003, 06:30 PM	#7
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	ginter... here you go.

06-23-2003, 11:53 PM	#12
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	The hose going into the cab goes to the brake light switch I think. I'll have to look tomorow.

06-24-2003, 09:08 AM	#13
ginter Registered User Join Date: Mar 2003 Location: Denver CO. Posts: 156	Hmmmm..... That makes sense, but my brake light switch doesn't have a fitting for a vacuum line. Probably switched out at some point by the PO. On the other hand, in that diagram you posted it looks as if the "Vacuum Release Valve" may be a seperate unit. I'd love to see a picture of the CC brake light switch and/or release valve if you can do that. Last edited by ginter; 06-24-2003 at 09:13 AM.

06-24-2003, 09:16 AM	#14
ginter Registered User Join Date: Mar 2003 Location: Denver CO. Posts: 156	BTW longhornmail, Does any if that info you have on the CC list the specific vacuum pressure required for the unit? I'll have to improvise a vacuum source since my manifold has been changed out.

06-24-2003, 04:31 PM	#15
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	I'll try to get a pic, and now that you mention it, i think it is in fact seperate. The CC brake light switch should have 2 places for electrical plugs, and then a seperate switch for the vacume. Like I said, i'll try to get a pic here in a bit. As for vac requirements...I'm not sure what it takes. There is probably a plug/bolt/allen bolt on your intake someplace that you can remove for this fitting. Every aftermarket one I have seen has holes to plug up. Well, all the street ones anyways...but I don't think you have a tunnel ram with 2 4ppls on it.



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06-24-2003, 04:45 PM	#16
ginter Registered User Join Date: Mar 2003 Location: Denver CO. Posts: 156	It's an Edelbrock somethingorotheralloyjobby. I haven't looked real hard yet, but I haven't seen a plugged hole in it anywhere. I assumed th PO pulled the CC when he installed the manifold. But what do I know.

06-24-2003, 08:07 PM	#17
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Here is the best I could do. I've had this stupid digi-cam for a year now and still can't take very good pics with it. Oh well. My head is pretty much on the gas pedal, and the drivers door is to the bottom of the pic....for oreantation. Attached Images

06-24-2003, 09:50 PM	#18
Rod Join Date: Dec 1999 Location: Eastern - Manitoba Canada, Winnipeg Posts: 4,369	ginter... what years your truck and does it list cruise as an option... I saw a cruise like that a week ago and passed on it.. thought the vacuum pod was a newer style...maybe I was wrong. __________________ Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife.

06-25-2003, 01:02 PM	#19
ginter Registered User Join Date: Mar 2003 Location: Denver CO. Posts: 156	My truck is a 72 Cheyenne. IIRC, longhornmail and I discussed the cruise briefly shortly after I joined the board. I'm pretty sure this is a factory CC, but it has the under dash switch, so it may have been a dealer installed unit. longhornmail - thanks for the pic. I'm going to look at mine again here in a bit. I think I'm missing that switch though. I saw this thread and pics of what look like it may be part of the brake disengagement circuit?

06-25-2003, 03:48 PM	#20
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	That does kinda look like the switch on the pedal, but the rest of it doens't quite look right. But they did have a few styles on these so anything goes untill we can document EVERYTHING on the CC.

06-25-2003, 04:24 PM	#21
ginter Registered User Join Date: Mar 2003 Location: Denver CO. Posts: 156	My brake pedal doesn't have the bracket yours does for the shutoff. It will take me awhile to get this one figured out. Did you figure out what that extra wire is for yet? Last edited by ginter; 06-25-2003 at 10:57 PM.

06-25-2003, 04:45 PM	#22
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	nope. Haven't really tried either.

06-25-2003, 08:11 PM	#23
DINS 1 Registered User Join Date: Apr 2000 Location: Webster City, Iowa USA Posts: 572	the cruise on my 71 burb had a under dash switch and the cruise was listed in the glove box __________________ Wade "DURAMAX BURB" Burb on 2004 chevy 2500HD 4x4 Duramax chassis Long term project 2004 2500HD 4x4 crew cab GMC Duramax 4" lift 35's 79 RS Camaro

06-25-2003, 10:56 PM	#24
ginter Registered User Join Date: Mar 2003 Location: Denver CO. Posts: 156	For some reason, my glovebox sticker doesn't list the cruise. But it is a factory unit from all I can tell. That's why I suspect it was installed by a dealer.

06-26-2003, 05:21 AM	#25
jef5150 Inline 69 Join Date: Apr 2003 Location: valleysprings,california Posts: 1,018	I really wish my scanner worked on my computor!!!!!! Ive got all these diagrams and no way to send them to you......,IF ANYONE has a flatbed scanner,and a ORIGINAL,"1971 truck chassis service manual" go to Section 15,accesories,theres 6 pages of info & diagrams,,,,,,,,,,,,,,,,

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