Ryan, it may not be the switch. Check the basics. Is the flasher can ok remember there is one for the indicators and one for the E indicators circuit. Swap the cans over and see what happens. The cans are located behind the instrument panel. Did you upgrade the instrument lights with Leds? If so, they don't dim.
My Motto - Don't get Caught! If you do, Blame Someone Else!
I upgraded the LED's from Mustang Project like I did with my white car and those dash lights dim with the switch.
I will call Mustang Project today and find out more. The last car I put in a NOS light switch and now they are a lot more expensive/harder to find.
I forgot there being a second flasher can on 67 Mustangs - I will need to pull the dash to check the left turn signal indicator anyway. I bet I need another LED compatible flasher relay from Mustang Project.
I put the dash stuff together at different installments as I had time to drive down to my dads over a year ago and should have tested it more before I buttoned everything up.
Also noticed the light on the radio doesn't work, so will be pulling it out one more time too!
I knew better, but making any progress while I had the time looked better than leaving it all hanging out.
Last edited by rkmiller73 on Tue Nov 14, 2017 12:21 am; edited 2 times in total
I put a test light in that plug hole with the two blue with red stripe wires going to it and turned on the headlights - nothing. I tested the ground I was using for the test light on a courtesy light that I took the bulb out of and it worked. I don't think the 2 blue/red stripe wires are getting electricity.
I have the old harness out of the white car and the rotted old harness out of the burgundy car, may have to unwrap one to see where the wires connect.
As usual there were three things working against me.
1. There was some of the molded rubber plug rubber inside the plug so when I stuck the test light in, it wasn't getting contact. So I happened to scrape around. I first tested the three auxiliary outlet plug that connects to one of the blue/red stripe wires off the radio dial light and it worked in all three.
2. The old bullet connector was a tad smaller than the new female end and so I made it larger by putting a awl in the hole at the tip and slightly pushed in. ( yes make puns here )
3. I still could not get it to work with the incandescent bulb so on a last resort, put in an LED light and it WORKED.
I talked to a guy in Canada who I had the radio checked out by and he told me today that you have to go all or none on LED dash lights.
So now I am just waiting on an emergency flasher and I can button up the dash cluster. I will probably tape the lights to the back of the cluster so they don't fall out when putting it back into the dash.
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