If you do please help me with this one. I am building a street rod and I am using a 80's column where the turn signals, brakes and taillights were on or partially on individual bulbs. However I am using single taillights on the rod with dual element single bulbs (1157). There is a common way of doing this to get brakes and turn signals to work together on one of the filaments by using a tail light controller from the RV - trailer industry. It lets you hook a single tail light trailer to a multi light truck. I am having trouble getting mine to work right. Here is the question - late 60's RR, GTX, barracuda all had single bulb dual element tail lights for stop turn and tail. In the era of no solid state trailer controllers how did the factory make that work???

The turn signal switch separates the brake/turn signal function. Here's a link to a recent post about it.

https://board.moparts.org/ubbthreads/show...rue#Post7337485

Thanks for the replies. You were right on with the diagram/explanation. I didn't remember that the brakes went through the steering column, I was assuming that the white brake wire was for a dash light as my print calls it a "stop lamp". I hooked it up to the tail lights as shown in your print and my system works perfect. I really appreciate the help.

Glad to help and VERY happy you came back and followed up.

Some here just ask, get the answer and never give feedback.