'73 Firebird - Knocking off the ugly

[raggedjim]

When you change from idiot lights to full guages on a Firebird (or any car or truck) it's never a plug and play, there's always a few wires that need to be rerouted. On the Firebirds it's really not too hard if you go step by step.

I started with the tach wiring which will be new wiring as it is a separate harness from the main harness. It's just 3 wires- a 12v that is live at key on and start (IGN), a ground, and a TACH signal from your distributor. I used pink for the 12v, black for the ground, and white for the TACH signal (These colors match the factory colors). Sorry, I didn't take pictures of these before I got it all together.

You can order these harnesses on the internets but I have lots or wire (and a bunch of old harnesses I stripped out of parts cars).

I need to add, I bench tested all my gauges before I installed them. There's tons of info on doing this on the web but if anyone is interested in my method let me know.