Re: 71 Chevelle Dash light problem solved
You can get to most of the lights just by unscrewing the dash cover, they come out with 1/8 turn. I test them in the Temp. light socket that comes on with ignition to accessory power and is easy to reach. For more room you can move the loudspeaker and unbolt 3 dash frame to frame bolts and the steering column bolts which will get another 2 inches to get your hands on the light sockets. There's only 1 ground to chassis from the whole cluster, but the printed circuit board has 4 sheet metal screws into the cluster metal grounding the copper ribbon circuits. If the lights test good and still aren't coming on, check those ground screws. From there a turn signal issue may be in the column at the arm switch, brights from the floor dimmer, ebrake from the ebrake switch etc. The clock in this car didn't work since 72 until I tightened the power connector it kicked right on. I also picked a pod screw and added a ground wire to new a chassis spot.