NotThatCutlassS

Hello Y'all,

Ongoing with my project, I've now started to tackle my dash's electrical system. For starters, the previous owner decided to cut 80% of the gauge wiring. Since im realistically, only trying to have my dash light up, and display critical information(fuel amount), I would like some assistance on what my first step should be.

I know:

1. GEN (Generator/Charging System):
   
   • Wire color: Usually a red or orange wire.
2. BRAKE:
   
   • Wire color: a green or yellow wire.
3. FUEL:
   
   • Wire color: typically purple
4. OIL:
   
   • Wire color: light blue or brown wire.

attached is a image of what is left after the guy cut it.



If anyone knows a good start, let me know.

matt69olds

Pink= ignition power feed from the gauges fuse

Brown=generator light, goes to the voltage regulator either on the firewall or the alternator itself.

green=temp gauge se give unit (or light, if the car has idiot lights the green wire splits at the firewall connector and also goes to the ignition switch)

Blue= oil light goes to sending unit or switch

gray= dash lights

tan= fuel gauge

I’d strongly suggest investing in a factory service manual. The wiring diagrams are worth the purchase price. Don’t buy a reprint, the wiring diagrams are not in color.