Underdash wiring help w/gauges install - The 1947 - Present Chevrolet & GMC Truck Message Board Network

9teen69 · 05-25-2014, 11:45 PM

Howdy, I swapped out my dummy gauge wiring harness with a gauge wiring harness. Won't start now. Not sure what I'm missing. Made no changes on engine side.

Also weird is when I screw in "relay" (circled red in pic) the horn sounds.
Where does the purple wire go?

1972 3 on tree truck without factory air, currently install vintage air though and will be converting to automatic in near future.

Installing gauge cluster with tach.

thanks

PS: just installed firewall cardboard...PITA especially around gas pedal

05-25-2014, 11:45 PM	#1
9teen69 Registered User Join Date: Sep 2002 Location: Austin, Texas Posts: 1,048	Underdash wiring help w/gauges install Howdy, I swapped out my dummy gauge wiring harness with a gauge wiring harness. Won't start now. Not sure what I'm missing. Made no changes on engine side. Also weird is when I screw in "relay" (circled red in pic) the horn sounds. Where does the purple wire go? 1972 3 on tree truck without factory air, currently install vintage air though and will be converting to automatic in near future. Installing gauge cluster with tach. thanks PS: just installed firewall cardboard...PITA especially around gas pedal Attached Images __________________ 72 Cheyenne SWB C10 (daily driver) (Super fake cause I just love the glovebox emblem) 70 Camaro RS (frame-off in pieces) 70 Camaro RS (daily driver backup) 69 Custom LWB C10 (son now drives)



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