I am attempting to change out the instrumentation lights to LED on my 73 Mustang. I have the directional working as well as one of the speedometer bulbs working. I have checked and the bulbs not working are not getting any voltage. I have cleaned to contacts with electrical cleaner and nothing. Is it common for the circuit board to only work for certain bulbs? Is there away to test it before I buy a new one. Thanks.
Well, I changed out the circuit board and the lights came on. Then the next time I tried to turn them on, nothing. The only light working are the 3 that worked before, the directionals and the red mustang on the bottom of the speedometer .now I am thinking it is the headlight switch. Any ideas?