1955 Signal Light Switch not working

[Tater Salad]

I have all lights working except the right brake light. I know the right brake light works from the same filament as the signal light. The signal light works fine. (The flasher takes over when both are on) I have had the signal light switch out and everything seems fine. (No corrosion) I haven't checked continuity, as I write this, I see where the problem may be. But I'll continue. Any thoughts on why the light wouldn't work? I see Hills offers a newer switch. Does anyone have any experience with the differences of the new signal light switch?

 

[Tater Salad]

Biddle, you muddled that too. The signal lights work fine. The right brake light is the issue

 

[Tater Salad]

Done my darnedest to meet your criteria, still you think you're smarter

 

[Ward 57]

I'd look at The junction where the break light and the wire from the turn signal wire merge. The wire from the brake light switch may be broken. The original insulation on these cars are getting very brittle and connector corrosion is not uncommon.

 

[Tater Salad]

Thanks ward. That's a very valid point. Are you speaking of the junction blocks on the fenders or under the dash? Under the dash reads continuity

 

[Tater Salad]

 

[Ward 57]

Hmm, That wiring diagram doesn't show the connection at the turn signal and brake light switch. It's under the dash, I'd trace the wire from the brake switch to where the turn signal wires branch from left to right. There has to be a point where the brake light wire activates both but the turn signal only activates one side at a time.

 

[Tater Salad]

It's in the turn signal switch, center of diagram circles and triangles is the switch. And I wouldn't advise anyone to take theirs apart, small springs and tiny peices go flying.

 

[Ward 57]

View attachment 16297

Thanks ward. That's a very valid point. Are you speaking of the junction blocks on the fenders or under the dash? Under the dash reads continuity

Tater, after thinking on this a bit, I'd take a gamble on the flasher itself. It takes the constant current from the brake light switch and makes it intermittent. A cheap fix.

 

[Tater Salad]

All good there. Thanks ward. Switch wasn't allowing current to flow from green wire to orange and blue wire. Corroded and some arcing had pitted contacts.