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12-23-2007, 04:54 PM
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#1 |
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Registered User
Join Date: Apr 2007
Location: Reno, NV
Posts: 89
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Alternator help
Hi y'all. I have a 1972 1/2 4x4 pick up. The PO I think converted the alternator over to a internal regulator. The reason why I say think is that the regulator on the radiator support is still hooked up to the regulator. My amp gage in the truck doesn't work but the truck is charging the battery and the truck runs fine. Any information would be welcome.
Have a Happy Holiday season Bill Becky & Roxie
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1972 K-10 L/B 4x4 Matching #'s 350 4 speed from the factory. P/S P/B 1981 GMC 1/2 L/B 4x4 one owner truck. 4" lift 2004 Dodge Cummins Diesel 4x4 Q/C S/B 1986 Dodge D150 L/B 2WD |
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12-23-2007, 05:52 PM
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#2 |
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Junior Member
Join Date: Dec 2006
Location: Southeast Missouri
Posts: 2,436
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Re: Alternator help
The amp gage does not work on a lot of 67-72 Chevy/GMC pickups or at least does not move a lot.
The trouble usually is because one or both of the short fuses located on the back side of the radiator support are blown. I have found the best thing to do is to install a volt-meter either in or below the dash. Danny - Southeast Missouri |
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12-23-2007, 06:25 PM
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#3 |
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Registered User
Join Date: Apr 2007
Location: Reno, NV
Posts: 89
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Re: Alternator help
Well I found one of the small fuses and replace it. My gage sits over on the left side like its not charging. I have seen a few like you mentioned but those are stitting in the middle of the gage.
Bill
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1972 K-10 L/B 4x4 Matching #'s 350 4 speed from the factory. P/S P/B 1981 GMC 1/2 L/B 4x4 one owner truck. 4" lift 2004 Dodge Cummins Diesel 4x4 Q/C S/B 1986 Dodge D150 L/B 2WD |
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12-24-2007, 02:18 AM
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#4 |
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Senior Member
 
Join Date: Sep 2005
Location: Lewisville, Nc
Posts: 10,233
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Re: Alternator help
http://67-72chevytrucks.com/vboard/s...d.php?t=119379 read this post and make sure he converted it right. i did mine this way but i have a charge light and it works
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David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube Last edited by truckdude239; 12-24-2007 at 02:18 AM. |
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12-24-2007, 04:05 AM
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#5 |
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Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Re: Alternator help
I did the swap out too, the old amp meter never really showed me anything so I added the volt meter also. I tells the real story. Just follow the above instructions and it will be fine. Add a volt meter also.
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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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12-24-2007, 04:27 AM
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#6 |
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Registered User
Join Date: Oct 2005
Location: Overland Park, Ks.
Posts: 5,208
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Re: Alternator help
There are 2 fuses in rubber holders in the harness under the hood. If you replace these fuses it usually fixes the gauge. Sometimes they are corroded & need new holders.
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