Hey Gang,
Curious if anyone would know why EVERYTHING works except my dash lights. I have checked fuses, connectors, etc. When I turn on the head lights, they work fine but I get no voltage to the pin supplying power to the dash lights. Not sure if this is a common problem or not. Thanks in advance if anyone has any insight.

 

By the way, it's a '67 coupe.

 

ponyx2,

Hi. I have a 1968 Coupe. The dash layout is the same. There is a voltage regulator on the back of the instrument panel. It is small and rectangular in shape. You have to remove the the instrument panel to see it. My guess it is bad.

68pony5

 

Yeah, I know the relay you are talking about, I checked it with an ohm meter, says 2.0 ohms, thought that was ok, but since nothing else makes sense, that could be it.....I hope

 

Your dash lights go thru a dimmer in your headlight switch. That would be a place to look. That voltage regulator has nothing to do with the dash loghts.
Jim

 

I took the headlight / dimmer switch out, jumped all the terminals on the back side of the connector, still no lights UGHHHHHHHHHH

 

The circuit runs as follows: from the fuse panel to a connector (use tbd) to a second connector for the radio light(Does the radio light work?) to the instrument cluster connector tothe lights. It yours from here.
Jim

 

Thanks for the info Jim, like I said, I have tried a known good dash, the radio does work, and the only other clue is the other day, I turned the ignition switch to start it, and the solenoid gave 1 click, then ALL power was gone. There is another ealy under the dash, loose wired (not the one on back of the instrument cluster) and I was wondering if that was the culprit. The car still starts and runs fine now, but may one day leave me sitting somewhere. Who knows, I am stumped. The harness isn't all chopped up from previous owners, so I will start digging again.

 

ealy = relay, lol

 

Understand the omitted 'r'. Get a 1967 Mustang Electrical Assembly Manual. It shows the electrical continuity as well as the where.
Jim (Former USN Electronics Technician, USAF certified assembly tech, NASA certified assembly tech, Logistics engineer, Silicon Valley High-tech production manager)