Ammeter--boy am I stupid... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Lemield · 01-23-2006, 12:11 PM

My Ammeter was not working....so I removed the instrument panel and replaced the ammeter gauge with an NOS one that I got off EvilBay. Put it all back together but the gauge still would not work. Decided to look in the shop manual and found the there are TWO fuses in the harness for the Ammeter???? Anyhow, replaced the fuse on the drivers side near headlight (18 guage black and white wire) and voila...Ammeter works.

Wish I had looked at shop manual before starting...Oh well...live and learn.

farside847 · 01-23-2006, 12:14 PM

Quote:

Originally Posted by Lemield

Wish I had looked at shop manual before starting...Oh well...live and learn.

Dont worry, we have all been there. (remembering spending a good 3 hours trying to take off the ignition switch before finally reading in my manual how to do it)

Fred T · 01-23-2006, 12:36 PM

Good to hear you have admitted yourself to our club.

Now for the bad news. Your ammeter really isn't an ammeter. It's a voltmeter that measures the voltage difference between the alternator output and the battery input. The fuses protect the meter in case things get too out of whack. Now you can start feeling smarter again.

Lemield · 01-23-2006, 04:29 PM

Quote:

Originally Posted by Fred T

Good to hear you have admitted yourself to our club.

Now for the bad news. Your ammeter really isn't an ammeter. It's a voltmeter that measures the voltage difference between the alternator output and the battery input. The fuses protect the meter in case things get too out of whack. Now you can start feeling smarter again.

Thanks Fred....that is good to know!

see ten · 01-23-2006, 05:05 PM

Ah Hell! The guy I got my C/10 from had the same problem. He replaced his gauge with a new one over 20 years ago and it still didn't work. I never took the time to try to track down the problem. After reading your post I went out and popped the hood, sure enough it was blown. Does anyone know what amp this fuse is? Mine was blown and apparently I broke the glass when I pulled the wiring apart. The fuse looks like it was very short. Can anyone tell me what I need to get it going again?

67ChevyRedneck · 01-23-2006, 05:11 PM

At the risk of sounding stupid myself.... where are there fuses under the hood of a 67-72???

see ten · 01-23-2006, 05:18 PM

Quote:

Originally Posted by 67ChevyRedneck

At the risk of sounding stupid myself.... where are there fuses under the hood of a 67-72???

On my 72 by the drivers side headlight there was a black wire with a white stripe. It had a fitting(?) made of rubber that seemed to be pressed together. The fuse was in that. It was obvious mine had been blown for some time but I broke the glass getting it out. Now I need to know what to replace it with.

**john** · 01-23-2006, 05:20 PM

see ten the fuses are 4 amp. John

see ten · 01-23-2006, 06:10 PM

Quote:

Originally Posted by john

see ten the fuses are 4 amp. John

Well I put a fuse in it and that didn't seem to help any. Oh well.

**john** · 01-23-2006, 06:16 PM

Quote:

Originally Posted by see ten

Well I put a fuse in it and that didn't seem to help any. Oh well.

Did you find both fuses? The second one is located by junction block by batt. John

see ten · 01-23-2006, 06:50 PM

Quote:

Originally Posted by john

Did you find both fuses? The second one is located by junction block by batt. John

AH-HA! That got it going again my friend! The guy I bought the truck from had owned it 27 years and said it didn't work the entire time he owned it. He even told me he had replaced the gauge with one from GM. I owe you a beer my friend!
Thanks

**Yukon Jack** · 01-23-2006, 06:53 PM

This post is just another example of why this board rocks!

72MARIO · 01-23-2006, 07:06 PM

I got some fuses to check..... Only there under the dash in my truck now. With the shaved firewall all the wiring is tucked up under the dash this is going to be fun.

Lemield · 01-24-2006, 02:39 PM

Quote:

Originally Posted by see ten

AH-HA! That got it going again my friend! The guy I bought the truck from had owned it 27 years and said it didn't work the entire time he owned it. He even told me he had replaced the gauge with one from GM. I owe you a beer my friend!
Thanks

You already got it fixed but I think the fuse is an AGC4.

Lemield · 01-24-2006, 04:01 PM

Finally my ignorance pays off! Usually, I get in deep doodoo when I'm stupid around the house....this time it actually helped people!

Fatback · 01-24-2006, 08:02 PM

I found the one at the drivers side, but after years of being butchered up, I dont have one by the juntion block at all.

01-23-2006, 12:11 PM	#1
Lemield Registered User Join Date: Dec 2004 Location: Arvada Colorado Posts: 1,321	Ammeter--boy am I stupid... My Ammeter was not working....so I removed the instrument panel and replaced the ammeter gauge with an NOS one that I got off EvilBay. Put it all back together but the gauge still would not work. Decided to look in the shop manual and found the there are TWO fuses in the harness for the Ammeter???? Anyhow, replaced the fuse on the drivers side near headlight (18 guage black and white wire) and voila...Ammeter works. Wish I had looked at shop manual before starting...Oh well...live and learn. __________________ Larry 1949 Willys CJ2A, Kubota Turbo Diesel engine, Warn Overdrive, 11 inch brakes, 12volt, Warn M8000 Winch "Little Green" 1970 Rustoleum Roller Red C20 Custom Camper 454 TH400 "Big Red" 1971 K20 6.2 Turbo Diesel 4x4 4spd Ranger Overdrive "Pumpkin Wagon" 2005 VW Beetle Diesel 44+ MPG "Silver Bullet" Last edited by Lemield; 01-23-2006 at 12:12 PM.

01-23-2006, 12:36 PM	#3
Fred T Cantankerous Geezer Join Date: Aug 2002 Location: Bel Aire, KS Posts: 6,264	Re: Ammeter--boy am I stupid... Good to hear you have admitted yourself to our club. Now for the bad news. Your ammeter really isn't an ammeter. It's a voltmeter that measures the voltage difference between the alternator output and the battery input. The fuses protect the meter in case things get too out of whack. Now you can start feeling smarter again. __________________ Fred There is no such thing as too much cam...just not enough engine.

01-23-2006, 05:05 PM	#5
see ten WTB this ad Join Date: Sep 2004 Location: Lafayette Georgia Posts: 5,073	Re: Ammeter--boy am I stupid... Ah Hell! The guy I got my C/10 from had the same problem. He replaced his gauge with a new one over 20 years ago and it still didn't work. I never took the time to try to track down the problem. After reading your post I went out and popped the hood, sure enough it was blown. Does anyone know what amp this fuse is? Mine was blown and apparently I broke the glass when I pulled the wiring apart. The fuse looks like it was very short. Can anyone tell me what I need to get it going again?

01-23-2006, 05:11 PM	#6
67ChevyRedneck Hittin E-Z Street on Mud Tires Join Date: Nov 2004 Location: Greenville, SC Posts: 23,090	Re: Ammeter--boy am I stupid... At the risk of sounding stupid myself.... where are there fuses under the hood of a 67-72??? __________________ Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride American Born, Country by the Grace of God 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications!

01-23-2006, 05:20 PM	#8
john member #16 Join Date: Dec 1999 Location: Yuba City Ca. Posts: 3,618	Re: Ammeter--boy am I stupid... see ten the fuses are 4 amp. John __________________ john http://67-72chevytrucks.com/vboard/showgroups.php board vendors http://www.flickr.com/photos/1745471...7602865984234/

01-23-2006, 06:53 PM	#12
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,683	Re: Ammeter--boy am I stupid... This post is just another example of why this board rocks! __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

01-23-2006, 07:06 PM	#13
72MARIO Registered User Join Date: Nov 2000 Location: Huntsville Ontario Canada Posts: 4,052	Re: Ammeter--boy am I stupid... I got some fuses to check..... Only there under the dash in my truck now. With the shaved firewall all the wiring is tucked up under the dash this is going to be fun. __________________ 1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair http://67-72chevytrucks.com/vboard/s...d.php?t=625017 1967 C/20 6.0/4L80 Roofing Truck 1990 V2500 Suburban "Plow Truck" 2005 TAHOE DD

01-24-2006, 04:01 PM	#15
Lemield Registered User Join Date: Dec 2004 Location: Arvada Colorado Posts: 1,321	Re: Ammeter--boy am I stupid... Finally my ignorance pays off! Usually, I get in deep doodoo when I'm stupid around the house....this time it actually helped people! __________________ Larry 1949 Willys CJ2A, Kubota Turbo Diesel engine, Warn Overdrive, 11 inch brakes, 12volt, Warn M8000 Winch "Little Green" 1970 Rustoleum Roller Red C20 Custom Camper 454 TH400 "Big Red" 1971 K20 6.2 Turbo Diesel 4x4 4spd Ranger Overdrive "Pumpkin Wagon" 2005 VW Beetle Diesel 44+ MPG "Silver Bullet"

01-24-2006, 08:02 PM	#16
Fatback Registered User Join Date: Dec 2003 Location: North Central FL Posts: 126	Re: Ammeter--boy am I stupid... I found the one at the drivers side, but after years of being butchered up, I dont have one by the juntion block at all. __________________ 70 C/10 LWB 69 Cougar 68 Mustang 68 GMC 4X4 SWB



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