M923 turning lights issue

[Arny]

Hey guys,

Did anyone ever had a problem with the turning lights not flashing but glowing steadily when engaging the lever?

The problem seems to be related to the horn (button?) somehow.

If one works both work, if one isn't both are not working.

I'm a bit confused because it happens at random mostly when driving off after some days

Cheers
Arndt

 

[Scrounger]

While it isn’t the same problem you are experiencing, it may point you in a direction to look. On one of my trucks the flashers will work on the left, but the right is intermediate. The problem is more pronounced after the truck hasn’t been used for some time. After playing with the signal stat, the turn signal lever, I have tracked it down to a bad contact in the lever. The same truck occasionally flashes at a rate that is faster than normal. If the signal stat is turned off, then on, it will usually correct the issue.

On occasion the flasher just lights, similar the what you have described. After working the signal stat, they start to work. So, I would check the signal stat for wear.

It seems strange that the problem occurs at the same time as a horn problem. I would check the grounds on the horn circuit to see if that solves the problem on the horn.

 

[sandcobra164]

The flasher unit is likely bad. It only has 3 wires going to it if memory serves correctly. 24 positive and negative in, 24 out to turn signal switch. The turn signal switch sends power to the left, right or all four lights as determined by selection on the switch. When it senses load it pulses the output to the turn signal switch. I've had one fail on my deuce years ago and simply replaced it. Hope my brief summary helps.

 

[Jbulach]

I’m going to guess it’s a bad ground, shared by the horn and flasher.