89 MJ No Turn Signals

[dood]

2 hours ago, eaglescout526 said:

 

What do you mean? Our MJs are wired that way so the brake light in the rear gets overridden to blink while braking. Otherwise the person behind ya might not know what youre doing.  Now if your front stops blinking while youre braking then there is a problem and could point to a crossed wire.

I meant that the brake light gets overridden as it should, but there's no blinking. It just stays off until I deactivate the turn signal. It seems like the turn signal switch itself works, but that's all I can deduce.

[eaglescout526]

3 minutes ago, dood said:

I meant that the brake light gets overridden as it should, but there's no blinking. It just stays off until I deactivate the turn signal. It seems like the turn signal switch itself works, but that's all I can deduce.

 

I would definitely suggest what Pete said and make sure the right bulbs are installed or arent burnt out. Also clean the grounds if that hasnt been done yet. 

[jdog]

Do the hazards work @dood

[dood]

9 hours ago, jdog said:

Do the hazards work @dood

The hazards work, but only if I move the wiring harness that runs behind the fusebox just right. Something must be making a bad connection.

[Pete M]

I would definitely start there.  

[jdog]

Sounds like your fuse box has been eaten by brake fluid, I bet if you check for power on the turn signal fuse and the flasher there is none

[dood]

4 hours ago, jdog said:

Sounds like your fuse box has been eaten by brake fluid, I bet if you check for power on the turn signal fuse and the flasher there is none

Huh. There's good voltage at the fuse but I only measured about 2 volts at the flasher...

[jdog]

Gonna have to measure resistance with the fuse out to the flasher

[dood]

4 hours ago, jdog said:

Gonna have to measure resistance with the fuse out to the flasher

There seems to be continuity there. It reads near 0 ohms.

[jdog]

Ok with the fuse in check for voltage at the flasher but this time wiggle the fuse

[dood]

3 hours ago, jdog said:

Ok with the fuse in check for voltage at the flasher but this time wiggle the fuse

I found the problem! I wasn't checking the voltage at the time, but I was wiggling the fuse around when I noticed the flasher started to click. I inspected the connections at the fuse when I noticed half of one of the clips was missing. I put a tiny piece of aluminum foil in the socket as a temporary fix and put the fuse back in. The turn signals work perfectly! Can't believe I overlooked that. That's usually the kind of thing I check for first, too. I'm going to refresh the grounds like you guys suggested for good measure, but first I'm gonna replace that connector before I start a fire... 😅 Thanks everyone!

[jdog]