Blinker issue

[SkylarMartin]

1998 c1500, I have no blinkers and only hazards. when I use my turn signal either left or right while I have the lights off, it just turns on the hazards. when I turn the lights on, the blinker lights on the dash stay lit and do nothing when you flip the switch either left or right.

(Don’t come on, blinkers/hazards when the lights are on)


Also the third break light does not work.


The fuses are all good and I’ve changed the multi-function switch and relay already. I have no idea where to go from there. Any help would be much appreciated.

 

[JWOK]

I haven’t looked at the wiring diagram for these in a while, but what you are describing suggests the circuits are connecting through a lost ground or possibly a bulb filament that has partially detached and crossed circuits. Check the grounds and bulbs in your tail lights.

 

[97C1500TJ]

Check the ground at the rear of the frame behind the rear bumper.

 

[stutaeng]

Most likely the multi function switch: https://shop.advanceautoparts.com/p/bwd-multi-function-switch-s14086/20970514-P?searchTerm=multi-function switch

Tip: Rock auto has the best price on it...

 

[SkylarMartin]

(97c1500tj) the ground looks good but I’ll wire brush it. How would I check it with a multi meter? Anyone know? Thank you for the help!!!

also i stated, I have already changed the multifunction switch and the blinker relay

I’m sorry I didn’t say, I have already changed all the bulbs (headlights & taillights) and the taillight lighting boards too.

 

[HotWheelsBurban]

Sounds like a ground or connections issue, check grounds and connections and wires in the harness. Stuff gets pinched in the column and under the dashboard. It is possible to get a bad multi function switch though; had it happen on my Dodge Intrepid. At least on that car, changing it didn't involve the steering wheel. Chrysler engineered the Saginaw tilt column better than GM did!

 

[SkylarMartin]

Yeah, all that would be left, is a shorting out wire or a bad ground. It takes a special someone to know how to do auto electric stuff I don’t know what I’m doing when it comes to this stuff.

 

[97C1500TJ]

(97c1500tj) the ground looks good but I’ll wire brush it. How would I check it with a multi meter? Anyone know? Thank you for the help!!!

also i stated, I have already changed the multifunction switch and the blinker relay

I’m sorry I didn’t say, I have already changed all the bulbs (headlights & taillights) and the taillight lighting boards too.

My issue was a little different but I had someone help me by flipping the blinker while I insert my positive lead into the wiring connection on one of the taillights and the negative lead on the ground. Hope this helps.

 

[SkylarMartin]

My issue was a little different but I had someone help me by flipping the blinker while I insert my positive lead into the wiring connection on one of the taillights and the negative lead on the ground. Hope this helps.

oh ok I didn’t even think of that, and what setting would you put that on? Sorry I’m just not to good with this stuff. Would that also test the ground if it’s good. If I put the negative on the ground wire, if it’s grounded right?

 

[97C1500TJ]

oh ok I didn’t even think of that, and what setting would you put that on? Sorry I’m just not to good with this stuff. Would that also test the ground if it’s good. If I put the negative on the ground wire, if it’s grounded right?

I used DC voltage. The rear ground is a metal loop with a bolt holding it down. Clean off the bolt and put the negative to the bolt. If you get a positive voltage reading on your meter you have a complete circuit.