915A1 Turn Signals Not Working. Please Help if Possible.

[SUPRDUD]

I have been searching old posts and have not found what I need yet. This is a work truck and I've been busy helping my sick parents and am behind on my farm work and now both of my semi tractors have electrical gremlins.

One is at a repair shop. The other one that I'm working on tonight lost the turn and brake lights.

I have been using a voltage meter and have no power at all on any of the wires on the plastic plug that plugs into the turn signal switch on the steering column. I figured one of them, maybe the big red wires on one end of the plug, should be hot.

I do have 12V to one of the wires going to the turn signal blinker switch (Yellow Box on the bracket ahead of the column) and I have a new one of those to try too, but it made no difference.

Any good ideas so that I may get started on my corn harvest with blinkers? Thanks.

 

[mdemars03]

Check the power going to and from the 3 lever light switch. The turn signals feed through that. You could have a bad three lever light switch causing you problems.

 

[SUPRDUD]

Check the power going to and from the 3 lever light switch. The turn signals feed through that. You could have a bad three lever light switch causing you problems.

My 915A1 just has a push pull light switch with a rotary dash light dimmer. Do the flashers power up through this too?

 

[wreckerman893]

If I remember correctly the switch for the M915 is a common one and is a available at NAPA. If that is your issue you can remove it and take it with you to match it up with what they have in stock. I think it crosses over to one that fits a civilian Jeep.

 

[Artisan]

The A1 is a totally different animal from my M916.


BUT, I believe I have an M915 schematic in the ARTISAN's M916 thread,
on page 1.

 

[SUPRDUD]

Thanks for the help!

 

[Tow4]

Make sure the Blackout toggle switch is in the normal position.

The trouble shooting for the turn signals and stop lights are in TM 9-2320-283-20-1 and start at page 2-164.

 

[SUPRDUD]

Make sure the Blackout toggle switch is in the normal position.

The trouble shooting for the turn signals and stop lights are in TM 9-2320-283-20-1 and start at page 2-164.

Thanks. Blackout switch is in "normal."

 

[SUPRDUD]

Truck in town has a bad headlight switch.

Trying the same thing with the one at home.....