I have a 96 Ford Ranger sky extended cab and my dash lights aren’t working making it hard to drive at night. When I want and pulled them out only two were burnt out and after doing that all my signal lights went out and I’m not sure if it’s the fuse or my lights. I have attached a photo of my fuse box as I’m not sure which fuse is which.
The instrument cluster lights get power from the Dimmer wheel which gets power from the Main Light switch when Parking Lights(or head lights) are on
Power path
Fuse #3 is main light switch power------------------Light switch(parking light relay)----------------Fuse #7-----------------Dimming Wheel--------------instrument cluster bulbs
Fuse #3 has power all the time, not key on/off power
There is a Parking Light Relay that passes this power to parking lights and dimming wheel, but if Parking Lights are working then that relay is OK
Dimming wheel also can turn on the Dome light, but that uses different power/fuse, so dimming wheel can fail for instrument lights but dome light still works, and visa versa
Ok , I have checked all my fuses and they are good, is there a way to test the dimmer wheel? Also what would cause my signal lights and hazard lights to go out? Where are the dash lights located on my truck as well?
You would need to use a Volt/Ohm meter to test if power is getting to the dimmer wheel and leaving it, and then OHM Meter to see if wheel resistance is changing when rotated
Same Voltage test for main light switch
I have confirmed my dimmer wheel is bad as fuse 7 and 3 are still good, I cannot find the relay for my turn signals anywhere in my truck and I am wondering if it’s some where else
Picture here under the dash, with panel removed: https://static.cargurus.com/images/s...1600x1200.jpeg
Might be clipped to metal bar that holds bottom of panel
Yellow flasher was the wrong one, and what parts store sold him :)