Author Topic: What color are the wires for the fuel gauge on a 73-79 K-20?  (Read 9778 times)

Offline 1976Scottsdale

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What color are the wires for the fuel gauge on a 73-79 K-20?
« on: August 18, 2007, 01:40:59 PM »
I now know what I have to do to make my fuel gauge work on my 1976 K-20.  All I need to know is if there is a kind soul out there who might be willing to look under their truck with a single fuel tank and tell me what color the wires are that run to the top of the tank.  If memory serves, there will be to, a ground and a hot wire.  I need to know what color they are.  Many thanks for any help.

Offline eventhorizon66

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Re: What color are the wires for the fuel gauge on a 73-79 K-20?
« Reply #1 on: August 18, 2007, 02:09:47 PM »
Pink or Tan for the wire to the gauge and blue, purple, or light green for the ground (according to Haynes).  Mine is pink w/ white stripes (gauge) and purple (ground) on a dual tank '85.
'85 C10 SWB 350 700R4 TKO600

Offline 1976Scottsdale

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Re: What color are the wires for the fuel gauge on a 73-79 K-20?
« Reply #2 on: August 18, 2007, 05:04:47 PM »
Thanks a bunch.  Mine has the 84 frame wiring so it has the selector valve with like 12 wires on it... a bit more confusing than my old 76.  That should take care of me.

Thanks again.

Offline eventhorizon66

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Re: What color are the wires for the fuel gauge on a 73-79 K-20?
« Reply #3 on: August 18, 2007, 09:56:38 PM »
Just so you know, the '77 - '87 trucks also have either blue, purple, or light green ground, but they all have a pink wire from sender to the gauge.
'85 C10 SWB 350 700R4 TKO600