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73-87 Chevy _ GMC Trucks => Interior & Equipment => Instrumentation => Topic started by: 1976Scottsdale on August 18, 2007, 01:40:59 pm

Title: What color are the wires for the fuel gauge on a 73-79 K-20?
Post by: 1976Scottsdale 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.

Title: Re: What color are the wires for the fuel gauge on a 73-79 K-20?
Post by: eventhorizon66 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.

Title: Re: What color are the wires for the fuel gauge on a 73-79 K-20?
Post by: 1976Scottsdale 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.

Title: Re: What color are the wires for the fuel gauge on a 73-79 K-20?
Post by: eventhorizon66 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.