Amp Gauge ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

70GMCer · 07-08-2006, 02:54 PM

I'm trying to get my factory amp gauge to work. I've tried 2 different factory gauges, and no luck. I have did a continuity check on the circuit from the battery junction block to the dash panel plug (both fuses are good). All checks out good. I have a constant 12 volts into the gauge and out the other side of the gauge whether the engine is running or not. Is this supposed to have constant 12 volts there? Does anyone know what the ohm readings are supposed to be across the amp gauge terminals?

Any other ideas?

Oh, I did rewire my alternator for a internal regulator per FAQ on here. Charging system is working fine.

steve

jhow66 · 07-08-2006, 05:24 PM

Check this:
http://67-72chevytrucks.com/vboard/s...ighlight=gauge
It will show you the wire that was lost when you went to internal reg.

cornutz · 07-08-2006, 06:34 PM

quick side question Steve,

Which alt. did you use?

Thanks,

Bill

70GMCer · 07-08-2006, 06:37 PM

Just a regular 60 amp w/internal reg. Not a one wire alt.

**VetteVet** · 07-08-2006, 11:55 PM

Here is a link that shows how to wire an ammeter in for a 66.It should be the same.
http://www.6066gmcguy.org/ammeter.htm
To answer your second question.
http://67-72chevytrucks.com/vboard/s...d.php?t=178329

*MisterMan* · 07-09-2006, 12:44 AM

pop off ur dash bezel WITH THE NEGITIVE OFF THE BATTERY REMOVED. have some one hold the dash (to keep it from grounding.) re connect battery. get a tester on the back of the amp gauge, positive on one post, ground the other. need more info, pm me.

trust me, that gauge is hot 24/7 (as long as the batt is connected) i fried my brand new circut board by letting the post's ground out on the frame while putting the dash back in.

70GMCer · 07-09-2006, 07:57 AM

Thanks to all for those ideas. From what I have been reading on here and elsewhere, is to go with a volt meter instead. I'll try a few of those other ideas mentioned, and then see.

07-08-2006, 02:54 PM	#1
70GMCer Senior Member Join Date: Apr 2005 Location: Joppa, Maryland Posts: 4,408	Amp Gauge ? I'm trying to get my factory amp gauge to work. I've tried 2 different factory gauges, and no luck. I have did a continuity check on the circuit from the battery junction block to the dash panel plug (both fuses are good). All checks out good. I have a constant 12 volts into the gauge and out the other side of the gauge whether the engine is running or not. Is this supposed to have constant 12 volts there? Does anyone know what the ohm readings are supposed to be across the amp gauge terminals? Any other ideas? Oh, I did rewire my alternator for a internal regulator per FAQ on here. Charging system is working fine. steve __________________ 1997 GMC Sierra Ext 1965 Mustang

07-08-2006, 05:24 PM	#2
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	Re: Amp Gauge ? Check this: http://67-72chevytrucks.com/vboard/s...ighlight=gauge It will show you the wire that was lost when you went to internal reg. __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

07-08-2006, 06:34 PM	#3
cornutz All Praise RANDY!! Join Date: Sep 2004 Location: Central California Posts: 391	Re: Amp Gauge ? quick side question Steve, Which alt. did you use? Thanks, Bill

07-08-2006, 06:37 PM	#4
70GMCer Senior Member Join Date: Apr 2005 Location: Joppa, Maryland Posts: 4,408	Re: Amp Gauge ? Just a regular 60 amp w/internal reg. Not a one wire alt. __________________ 1997 GMC Sierra Ext 1965 Mustang

07-08-2006, 11:55 PM	#5
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,709	Re: Amp Gauge ? Here is a link that shows how to wire an ammeter in for a 66.It should be the same. http://www.6066gmcguy.org/ammeter.htm To answer your second question. http://67-72chevytrucks.com/vboard/s...d.php?t=178329 __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. Last edited by VetteVet; 07-09-2006 at 12:04 AM.

07-09-2006, 12:44 AM	#6
MisterMan Account Suspended Join Date: Jan 2006 Location: Visalia, California Posts: 286	Re: Amp Gauge ? pop off ur dash bezel WITH THE NEGITIVE OFF THE BATTERY REMOVED. have some one hold the dash (to keep it from grounding.) re connect battery. get a tester on the back of the amp gauge, positive on one post, ground the other. need more info, pm me. trust me, that gauge is hot 24/7 (as long as the batt is connected) i fried my brand new circut board by letting the post's ground out on the frame while putting the dash back in.

07-09-2006, 07:57 AM	#7
70GMCer Senior Member Join Date: Apr 2005 Location: Joppa, Maryland Posts: 4,408	Re: Amp Gauge ? Thanks to all for those ideas. From what I have been reading on here and elsewhere, is to go with a volt meter instead. I'll try a few of those other ideas mentioned, and then see. __________________ 1997 GMC Sierra Ext 1965 Mustang



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