M1028A3 Blinker question

[roveroverme]

Someone here mentioned, that the Brake light overrides the Blinker. I was OK with that assumption, until I noticed the passenger side blinker blinks even with the brakes on :-0 , while the driver side blinker stops flashing ,when I press the brake pedal.
I tried to find that thread where it was mentioned , but couldn't.
Does anyone know what could make that happen?

 

[dependable]

Check & clean the ground wires in the lighting harness, replace any bad bulbs, clean contacts and replace flasher with a robust commercial one.

 

[cpf240]

Um, ok... then how does the driver behind you know you intend to turn when you are at a stop light, with your foot on the brake pedal, if the brake pedal overrides the blinkers? That makes no sense.

I'm with dependable, there is probably a bad ground someplace. The light bulb sockets are known for having broken ground tabs. Easy to replace the sockets.

 

[roveroverme]

So I dissected the whole situation a little bit. It looks like there is some funky rewiring that's been done. A Yellow wire comes from the cab and ties into the brake light circuit (i think) When I clipped it there was no more breaklights) On the left side Both filaments light up when the Blinker is on. Even after disconnecting the Ground wire, the blinker would still blink (odd) and with the brakes pressed it stops flashing. But just on the left side I guess I gotta find out why the Yellow wire was put in and go from there.

 

[K9Vic]

Per Federal DOT regulations, you tail lights left or right signal (which ever is active) will flash when the brakes are applied. This is how it works on all vehicles and would be illegal if it did not continue to flash with the brakes applied. One tail light is on brake and other is flashing to indicate a change in direction.

The hazards will stop flashing to the front & rear with the brakes applied.

If this is not how it is working, it is defective.

 

[roveroverme]

Per Federal DOT regulations, you tail lights left or right signal (which ever is active) will flash when the brakes are applied. This is how it works on all vehicles and would be illegal if it did not continue to flash with the brakes applied. One tail light is on brake and other is flashing to indicate a change in direction.

The hazards will stop flashing to the front & rear with the brakes applied.

If this is not how it is working, it is defective.

It is most likely and prominently the case that something is defective. What could have been the reason for running a bypass wire all the way back there and tie it into the circuit?

 

[Dipstick]

Sounds like the original wire in the rear harness might have broken. Hence, the jumper was made. Make sure you have a dual filament bulb in that position. I think the bulb is a #1628. The last time I had a blinker problem I traced it to water being present inside the military connector on the top of the turn signal flasher. Hope this helps.

 

[roveroverme]

Sounds like the original wire in the rear harness might have broken. Hence, the jumper was made. Make sure you have a dual filament bulb in that position. I think the bulb is a #1628. The last time I had a blinker problem I traced it to water being present inside the military connector on the top of the turn signal flasher. Hope this helps.

Yes, they are dual filament bulbs. I gotta have a look at these funky wiring schematics. I'll check out that connector , too thanks for the hint.

 

[MarcusOReallyus]

What could have been the reason for running a bypass wire all the way back there and tie it into the circuit?

That's called, "I'm too lazy to fix it correctly, or I honestly don't have time right now and have to get this working."

 

[roveroverme]

That's called, "I'm too lazy to fix it correctly, or I honestly don't have time right now and have to get this working."

I agree, either reason is not acceptable to my OCD, though

 

[MarcusOReallyus]

I agree, either reason is not acceptable to my OCD, though

Same here, and OCD aside, it's just not a good idea!

I would do something like that in a pinch, to get going, but that's in the "roadside emergency repair" category, in my book.