2006 ranger. Left rear signal/brake not working.

[6.2]

Ok, so both rear signals and brakes weren't working as pointed out by a kind officer, so in bought new bulbs to replace. Right side first, bingo. Works now, on to left side.

No bueno. Didn't work. Do I tried a second, then third new bulb. No dice.

Any ideas? Checked the plug under bed, fully seated, wiggled no change. Wiggled wires that go into socket, no change.

Need this fixed asap. Baffled since its only the second filament in the left bulb only that doesn't work. All others front and back are fine.

 

[Slammin Sam]

A bad ground can cause tail light problems. Check the socket mount for rust.

 

[RedRanger69]

Check the fuse, then start checking for 12 volts with a test light.

 

[6.2]

I don't see how a bad fuse would only affect one filament in one bulb. But I'll check em.

 

[6.2]

Checked fuses, bulb socket, etc. Things look fine.

Which color wire is the left signal/brake? Maybe its something in the SJB?

 

[6.2]

When I get home I'll try swapping the bulb sockets left to right, and see if that does anything.

 

[baddis]

there are 2 fuses one inside and one outside and a fuse for left and one for right under the hood

 

[6.2]

But of one went, would it not take out both either both lefts, or rear, or whatever? How can a bad fuse out affect one filament on one bulb.

Its gotta be a bad wire.

 

[martin]

It might be an issue with the turn signal switch.

 

[6.2]

Also, doubt that. As a other signals and functions of the switch work. And its the brake light to. So it would have to be the multifunction switch, as well as the brake switch. Which if it was, the right side brake wouldnt light either. And it does.
But I guess stranger things have happened.

Didn't have a chance to switch bulb sockets yet.

 

[enjr44]

Well, I looked all over and I could not find a schematic for 2006. So I am not a lot of help. My best guess is you have a bad ground or broken wire between the multifunction switch and the non-working lamp

But, I did find this:
1. http://www.fixya.com/cars/t24832965-2010_ford_ranger_tail_lights_wiring
And this:
2. http://www.therangerstation.com/tech_library/EDiagrams/files/Diagram_turn_stop_hazard.JPG

Hope this helps, Ed

 

[6.2]

Got it working folks, turns out it was the plug under the bed. Guess somehow mud got in there, and was not allowing a full connection. Cleaned it out, plugged it back in and wrapped with plastic wrap and duct tape lol. Problem solved.

Thanks for everyone a ideas.