I have a 73 f150 ranger. The turn signals do not work. The hazards work fine. All lights are good. Flasher is good. Turn signal assembly new. Fuses good. When I engage the turn signals the break light on that side goes out? Any help would be appreciated thank you.

 

Those types of problems are almost always due to grounding issues.

 

I had the same problem a week ago it was the socket that the bulb was in changed it and worked fine again auto zone 6.99 hope it helps

 

How about relays there one in front and one on the back side of the fuse panel in same spot as front one hope it helps I had a problem with my signals at one point

 

Thank You All. It was a ground problem!