Electrical gremlin

[glennstar67]

Hey everybody. If anyone can solve this one you'll be my hero for life. lol I have a 74 Roadrunner. The headlights and turn signals work fine in the front. But in the back I have no taillights and when you put on the turn signal either left or right both bulbs blink. Four-way flashers do work front and rear. And sometimes the reverse light yellow indicator below the dash will blink along with the turn signals. I have replaced all bulbs and both flashers. All fuses look good as well. Help!!!

 

[PlymCrazy]

Do you have a FSM? Get yourself acclimated with the wiring diagram in there and a multimeter. Sounds like you're missing a ground or something is shorting.

 

[snake]

Do you have a FSM? Get yourself acclimated with the wiring diagram in there and a multimeter. Sounds like you're missing a ground or something is shorting.

Turn single switch

 

[glennstar67]

Turn single switch

The one in the column?

 

[RemCharger]

The one in the column?

Yup. They can do the neatest things.

 

[snake]

Yup. They can do the neatest things.

X2

 

[PlymCrazy]

Yup. They can do the neatest things.

X2

Adding that to my arsenal

 

[72RoadrunnerGTX]

Grounding problem with the tail lamp harness, need to verify the sockets are grounded.

 

[glennstar67]

Yup. They can do the neatest things.

Ok. I'll check it out. Thank you both