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01-01-2012, 07:00 PM
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#1 | |
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Registered User
Join Date: Jan 2011
Location: Townsend MT
Posts: 1,725
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Amp Guage
I have a 1 wire Chevy alternator on my truck. Is there any way to hook the amp gauge up?
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1966 F250 4X4 416 1972 K20 350 4 OTF Quote:
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01-02-2012, 09:12 AM
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#2 | |
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Registered User
Join Date: Jan 2011
Location: Townsend MT
Posts: 1,725
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Re: Amp Guage
Yes? No?
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1966 F250 4X4 416 1972 K20 350 4 OTF Quote:
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01-02-2012, 10:11 AM
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#3 |
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Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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Re: Amp Guage
Do you have a stock wiring harness with the stock ammeter and have you added or changed any of the power wires from the ammeter to the battery?
Jim
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1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC |
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01-02-2012, 10:15 AM
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#4 |
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C/10 junkie
Join Date: Nov 2010
Location: Stockton Ca
Posts: 9,093
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Re: Amp Guage
My father in law changed his alternator to a one wire and his gauge works fine on his 70 gmc. His truck has the factory gauges.
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Shawn 70 LWB C10 current driver/project http://67-72chevytrucks.com/vboard/s...d.php?t=663051 68 SWB C10 Work in progress.....SOLD http://67-72chevytrucks.com/vboard/s...d.php?t=559520 72 LWB C10 Sold 71 LWB C10 Sold 68 LWB C10 CST Sold http://youtu.be/kbB0QrBIs9k My mom always had the best advice. It was just a tad late. After a fall that involved blood, she'd say....."Careful!" 
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01-02-2012, 08:05 PM
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#5 | |
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Registered User
Join Date: Jan 2011
Location: Townsend MT
Posts: 1,725
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Re: Amp Guage
I just hooked up the red wire to the terminal on the back of the alternator. Everything else is stock. I just taped off the other two wire.
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1966 F250 4X4 416 1972 K20 350 4 OTF Quote:
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01-02-2012, 08:25 PM
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#6 |
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Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,945
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Re: Amp Guage
The factory amp meter is a good guess at best. Even if it's working it's hard to tell what it's doing.
Why not buy a volt meter and hook it up?  
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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01-02-2012, 08:56 PM
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#7 | |
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Registered User
Join Date: Jan 2011
Location: Townsend MT
Posts: 1,725
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Re: Amp Guage
I know they're hard to tell if they're working but I'm pretty sure mines not.
I am going to get a volt gauge along with some others. I want everything my truck has to work though.
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1966 F250 4X4 416 1972 K20 350 4 OTF Quote:
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01-02-2012, 09:22 PM
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#8 |
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Msgt USAF Ret
  
Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,718
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Re: Amp Guage
If your truck is wired like the diagram below then the ammeter should work just fine. You can eliminate the voltage regulator, switch alternators and run the red wire off the back of the one-wire like it shows in the diagram. If you run it to the battery plus cable or the starter then the ammeter cannot read the voltage differential between the battery and the alternator. The one wire alternators will eliminate the battery charging light from the circuit. It's so easy to use the three wire alternators that I don't recommend the one wires.
You will need the small 20 gage black wires and the fuses for the ammeter to work.
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VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
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01-13-2012, 05:24 PM
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#9 |
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Registered User
Join Date: Jan 2012
Location: Motown
Posts: 7,680
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Re: Amp Guage
redneck
your old amp gauge is 30 amp, your one wire alternator is probably 100 amps. i'm not a fan of running 100 amps thru a 300 amp gauge with old wire. most oem's got rid of amp gauges in the mid 60s, dodge was the exception. i feed my alternator directly to the starter cable, but like you i want all my gauges to work. follow the link in my signature to see how i converted my 58 truk's amp gauge to a volt gauge. it's fairly easy to convert the gauge. 
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cool, an ogre smiley Ogre's 58 Truk buildhow to put your truck year and build thread into your signature shop air compressor timer |
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