Right tail light problem

[hassyfoto]

91 Comanche

 

Ok, the problem is the right turn lamp blinks very slow during the day and when the running lights are turned on the right blinker almost does not work at all. It may blink once every 40-45 seconds. 

 

This is what I have preformed;

Checked the grounds on the rear of the truck, under the hood and under the dash. Cleaned the metal and cleaned the grounds.

Replaced the bulbs several times. I made sure both sides has the same bulbs made from the same company

Checked to make sure there is power to the right lamp & there is!

Replaced the fuses, several times just to make sure.

Checked the wire harness under the bed for cuts, loose connections, etc... I did not see anything that appeared damaged, worn or rusted

 

Since some of the obvious problems are already addressed, what are some other possibilities. 

Could this be a turn signal harness issue inside the steering column? 

 

Looking for answers from someone that has had a similar issue.

 

thanks

[Strokermjcomanche]

Have you switched the turn signal flasher with the 4way flasher ? Also check the connection for the front lighting harness at the air box on the drivers side , may be corroded inside .

[64 Cheyenne]

When I replaced both front turn signal sockets, all my turn signal gremlins went away. Problem is they corrode internally, cause ground issues, which affects how the rest of the other turn brake tail lights operate. Good replacements in the "help" section of most parts stores.

[hassyfoto]

I will check the sockets & the 4-way this weekend.

[fiatslug87]

I had the exact same problem, replaced the socket as 64 Cheyenne advised and that solved it.

[64 Cheyenne]

Front sockets....they're the ones with the grounding issues that cause all the problems.

[fiatslug87]

Why would bad front sockets only affect the right rear? Replace the socket that's giving you problems and go from there.

[64 Cheyenne]

Because the fronts short out to ground, causing all kinds of mayhem. Ohms law.

[schardein]

I read this.

Remembered I had the same issue.  Also did most of the same fixes.

Went out and checked, but it is not doing it anymore.

 

About a month ago I replaced my entire front lighting harness with one that had factory fog light wiring (got it from the junkyard).  Cleaned all the terminals at the main harness connection behind the driver headlight, both the truck side and light side.

 

I can only conclude that is what fixed it.