1985 308 Qv, Help!

Yes, my gauges do that too - not just coolant temp, but oil pressure and fuel gauge also. Indicative of a need to clean a few ground points and connections on the back of the gauges, I think!

 

Took my instrument panel out Sunday. Checked my voltage to the lights 9.9 volts. Hum low. Check the dimmer switch. It works but 9.9 volts is the most I could get. Bypass it. Voltage went up 1 volt to 11 volts. Cleaned the contacts no better. I have the birdman fuse box already. Installed some new leds ba9s bulbs. Waiting on the rest of my bulbs to come in. Put it back together very easy. The leds are nice and bright blue. The old bulbs in the rest of the cluster are brighter also. I need to find why I only have 11 volts. No change on the gauges them self as far as how they read. I will work on it again next Sunday.