Warning Lights Question

[dabtl]

I have been working on the lighting system, changing out the flasher and seeking out shorts.

All was working well. Then.......................

A couple of days ago the right rear warning light quit flashing. Then, yesterday the left rear quit.

Both bulbs appear to be OK. The front marker lights flash as normal.

Any ideas? I am going at the wiring with the multi-meter today.

 

[m-35tom]

do the brake lights work?? same bulb and wiring. that would leave the problem in the turn switch.

 

[acetomatoco]

Or, if the early style flasher... could be the flasher or the individual wires to same.

 

[dabtl]

I kind of think it is a wiring issue. The flasher is working. The flasher is new and so is the turn signal.

 

[ida34]

I would check the grounds where the lights mount to the truck.

 

[dabtl]

That was where I started. Rusty and nasty. Cleaned the bolts with the Dremel. I will buy new tomorrow.

Found one bad light. So far so good.

I have learned , sorta how,a multimeter works and I am getting a pulse on the right and left with the flasher on both turn and warning flashing.

I am a genius. Or, at least smart enough to diagnose a defective bulb. Pretty good for me.