Originally Posted by 80PontiacWagon
Hello everyone, hope everyone is doing well.
I have a quick question about printed circuit boards in a 1980 Pontiac Grand Lemans Safari Station Wagon....Looks just like a Malibu Wagon, just different badges.
But anyway. I want to get rid of the idiot lights and put real gauges in. My question is by removing the circuit board will I have an issue with my alternator getting the signal to charge my battery? I'm not sure if I need it to complete a circuit or not. Or if I just need a jumper wire.
Thank you to everyone for all your help
My DD is a '80 Malibu wagon. I will tell you what I did.
When I put in my gages, I simply left the idiot lights operational, and used the gages along w/the lights. That way, the light will get your attention immediately if there's a problem while the gages will provide you w/the exact values like oil pressure in PSI, water temp in degrees, etc.
To answer the question, the alternator requires either a resistor or an idiot light. You can add the resistance to the wire running to the gage cluster from the alternator and pull the bulb, if you wanted to go that route.
I would not remove the PC "board", though. It is what provides power to the bulbs that illuminate the instrument cluster- including the fuel gage and speedometer.