Turn signals always on M1009

[avlon01]

The turn signals are now always on whenever the service lights are on and the main headlights are engaged.

I did search for similar threads, and have done the following:

1. Replaced all turn signal bulbs - front and back.
2. Cleaned all contacts front and back.

Both front and back turn signal indicators are always lit now. They were working a few weeks ago. When I move the lever on the steering column, I do not see a turn signal indicator on the dash.

All other lights work fine on the truck.

Any help would be appreciated.

 

[dependable]

Check flasher unit in fuse box.

 

[Hasdrubal]

Broken tab in turn signal bulb socket?

 

[Warthog]

Bad grounds on the radiator support?

 

[avlon01]

I'll check the fuse and the grounds tomorrow.

I did look in the sockets and all the tabs seemed OK. Might be something I couldn't see though.

 

[dmetalmiki]

Definately check the earths on the main lights to ensure they are not grounding through the signal units. You could have the lights on and with a ground to the battery with a fly wire to check that point ( at each turn signal) at least. Otherwise look for a possible short circuit.

 

[MuleMac01]

I think your problem might be the turn signal or hazard diodes on the fuse box wrapped in tape, if your not running military radios I would cut the diode out. I had kind of the same prob with my M1028 the left turn signal would stay lit when I turned it on. After I checked everything I found out I had a bad ground in the front bulb socket. So I got a new front head light harness, and that didn't seem to fix the issue till I cut the diode out now everything works. I'm not telling you this could be your issue but it's something to think about.