alternator wire ??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ryanroo · 11-17-2004, 01:59 PM

On my 70 that i just bought i had to extend the alternator harness to work with a pass. side alternator. what does this black wire do? i got the other three hooked up as they should be but im lost for this one.

another question, what would cause the gas guage to be out of phase. meaning that when i put the cluster back in the dash my guage reads well beyond full. thanks for the help
Ryan

JimKshortstep4x4 · 11-17-2004, 02:15 PM

The black wire shown is a ground wire and is probably not needed.

On your gas gauge, there are a couple of possibilities, 1) broken/disconnected
wire from sending unit or 2) bad sending unit, (electrical or stuck).

Jim

11-17-2004, 01:59 PM	#1
ryanroo Senior Member Join Date: Apr 2004 Location: sw colorado Posts: 2,720	alternator wire ??? On my 70 that i just bought i had to extend the alternator harness to work with a pass. side alternator. what does this black wire do? i got the other three hooked up as they should be but im lost for this one. another question, what would cause the gas guage to be out of phase. meaning that when i put the cluster back in the dash my guage reads well beyond full. thanks for the help Ryan Attached Images __________________ 72 K20 12v build 72 K20 "parts truck" A place for your diesel swap questions

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11-17-2004, 02:15 PM	#2
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	The black wire shown is a ground wire and is probably not needed. On your gas gauge, there are a couple of possibilities, 1) broken/disconnected wire from sending unit or 2) bad sending unit, (electrical or stuck). Jim



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