Flasher problems

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Sep 28, 2013 | 08:54 PM

ZekeD

Thread Starter

Mountain Pass

Joined: Dec 2009

Posts: 113

Likes: 9

From: Central Oregon

Flasher problems

I have a 2004 HD 4X Short Box Dually Off Road.

When the ignition is on the flasher module under the dash slowly (about 1/2 speed from the turn indicator speed) cycles.....click...click...click.

It stops when I apply brake pressure to the pedal.

It cycles whether the truck is running, in motion, stopped, or just with the ignitn in the run position.......anytime the brake is not applied.

Any ideas why the flasher is doing this? I have replaced the flasher module once already as the orig. one failed. Presumeably from the same problem.

Thanks
Zeke -Oregon

Sep 29, 2013 | 12:32 PM

SC_Hoaty

Cargo Master

Joined: Oct 2012

Posts: 2,333

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From: South Carolina

Doesn't the flasher always stop when the brakes are applied? Is the flasher switch the culprit?

Sep 29, 2013 | 03:43 PM

ZekeD

Thread Starter

Mountain Pass

Joined: Dec 2009

Posts: 113

Likes: 9

From: Central Oregon

Flasher problems

Yes they do.... But my flashers are not on. And if they are on they cycle about one time per second. In this case, no flashers, no brakes applied, no turning lights, head and running lights on or off, if you are quiet you can hear the flasher cycle at about once per 2 seconds. Even with the engine off, but the key on.

??????

Zeke

Sep 29, 2013 | 05:45 PM

SC_Hoaty

Cargo Master

Joined: Oct 2012

Posts: 2,333

Likes: 35

From: South Carolina

Short to ground someplace in the flasher circuit? Get a wiring diagram, a meter, and a lot of patience!

Sep 29, 2013 | 05:54 PM

SC_Hoaty

Cargo Master

Joined: Oct 2012

Posts: 2,333

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From: South Carolina

The flasher relay is in Aux Relay Box #1

You could just pull the relay and live without flashers. Turn signals should still work, I believe.

Sep 29, 2013 | 05:58 PM

SC_Hoaty

Cargo Master

Joined: Oct 2012

Posts: 2,333

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From: South Carolina

On second thought, that may take out the turn signals, too.

Sep 29, 2013 | 07:03 PM

ZekeD

Thread Starter

Mountain Pass

Joined: Dec 2009

Posts: 113

Likes: 9

From: Central Oregon

Flasher

When I had the module out I forgot to try the turn signals. The "module" that I replaced had 4-5 prongs on it, and plugged into a breadboard just to the right of the fuse access panel ( kinda under the ashtray). About 1 in cubed.

Thanks, I'll look for a short.

Zeke