RIGHT REAR BRAKE LIGHT

[MrMarty51]

I have done a lot of diagnosing on the brake lamp failure for the 2000 K3500.
A bad connection in the under hood brake lamp fuse got the left side brake lamp to working.
The tail lamps circuit boards were bad so I replaced those with new units.
Now the problem is only the right side brake lamp will not illuminate.
I have tested for voltage at the back left side connector, nothing, moved to the firewall and shamefully probed the wire just outside the connector, applied some anticorrosion compound and taped it up.
Moved to the haeness plug below the steering column and there is no illumination to the test light at the TS connector.
I am now guessing it is time for a new TS multifunction switch.
What do You all think ?

 

[MrMarty51]

I did forget to mention, all turn signals work as they should.

 

[ak diesel driver]

Sounds plausible. Any way to test the wiring in between?

 

[MrMarty51]

Only wire that was not tested was between the TS connector under the steer column and the signal switch itself.
I could pull the column apart and test the wiring and connections within, but, I`d rather not do that until I have a new turn signal switch in hand.

 

[MrMarty51]

Should just replace the TS switch anyway, the four way flasher switch has never been right, have to hold it to the on position or else it just forces back to off.

 

[MrMarty51]

Problem solved, at least for now. Just now tried the right turn signal, it flashed, stepped on the braking pedal, left brake lamp illumimated, turned on left turn signal, right side brake lamp was working. turned off turn signals and both brake lamps still functioning.
Strange days indeed, most peculiar Momma. LOL