Putting in gauges. What wire (color) off the head light switch turns on instrument cluster lights?
I kinda thought your year had a different layout on the fuse block but I just don't have any good fuse block pictures from the front and backside of one from a Camaro.Thanks Nova for pointing out the INST fuse. I have a 67 so fuse panel is different than pic but does have a open tab for that circuit.
I used the green wire, it is dimmable. Works great
They have for the years I was in the business. from the mid 70's until about 1990. I repaired many a radio installation that the radio ground was hooked to the gray and caused the inst lamp fuse to blow. It must have been in the instructions or a whole bunch of people used the same installer.Ironically on my 96 Impala SS when I added a oil pressure gauge...it was a grey wire to tap into for "dash lights" also.
Guess GM sticks with a wire color code plan