72 duster blinker / brake light issue

[quartermilepass]

Car is a 72 duster this was a racecar turned back to street. Little to no stock wiring.
Car has
Painless hot rod or street strip fuse box/relay kit in it.
New turn signal switch.
New brake light switch.

Issue iam having. I can have everything work, except I can not get the turn signal to cancel out the brake lights. It's either I get 1 or the other. I will turn signals on and they Will blink. Hit the brake and the turn signal no longer blinks.

Look at my painless fuse box. I need to know what wires go where. What wire goes from the fuse box to the brake switch, and what wire goes from the brake switch and to where. And from turn signal switch/column to where.

Schematic doesn't mean much to me when none of it is stock anyway. There has to be something iam missing. I have tried running the (stop) wire from the fuse box to the brake light switch, I have tries running the turn signal fuse box nub to the brake light switch, nothing.

Everyone says the turn signals feed through the brake light wires and are controlled through the turn signal switch. None of this seems to be working to me.

 

[quartermilepass]

Btw this car has been running and driving for year. The easy way out was just hooking the turn signals to the reverse lights and had no issues for years. Just trying to do it right.

I know u are suppose to have 1 wire for marker lights run to the back, 1 left side brake/turn wire , 1 right side brake / turn wire.

 

[Murray]

Brake lights must go through the T/S switch. It is the job of the switch to cancel out the brake lights when turning. Since you have functioning lights independently of each other it would seem that the problem is in the switch or the wiring.

 

[quartermilepass]

Brake lights must go through the T/S switch. It is the job of the switch to cancel out the brake lights when turning. Since you have functioning lights independently of each other it would seem that the problem is in the switch or the wiring.

You commented exactly what I said lol. This is why I posted pictures of what I had, and asking what wires need to go where because iam obviously missing something.

 

[quartermilepass]

Brake lights must go through the T/S switch. It is the job of the switch to cancel out the brake lights when turning. Since you have functioning lights independently of each other it would seem that the problem is in the switch or the wiring.

What wires from what I have go from the box to the brake light switch. What wires are connected to the brake light switch and where do they go from there. My only issue is having the turn signals cancel out the brake switch when applied.

 

[RedFish]

Brake lamp switch has only 2 wires. One of those is 12 volts hot at all times. Close that switch and that power continues on to the turn signal switch on a white wire. With the turn signal switch center/neutral both hrake lamps should come on. Move signal wand to left or right, one break lamp should go off. The one that went off now needs switched 12 volts from signal flasher (with ignition switch on). That supply goes into the turn signal switch and continues out to left or right bulb. Aftermarket fusebox is only that. You still use OEM switches and may need factory wiring diagrams. What puzzles me,,, you state it all worked fine with switched 12 volts off reverse lamps. The signal switch doesn't know where that power comes from.

 

[quartermilepass]

Brake lamp switch has only 2 wires. One of those is 12 volts hot at all times. Close that switch and that power continues on to the turn signal switch on a white wire. With the turn signal switch center/neutral both hrake lamps should come on. Move signal wand to left or right, one break lamp should go off. The one that went off now needs switched 12 volts from signal flasher (with ignition switch on). That supply goes into the turn signal switch and continues out to left or right bulb. Aftermarket fusebox is only that. You still use OEM switches and may need factory wiring diagrams. What puzzles me,,, you state it all worked fine with switched 12 volts off reverse lamps. The signal switch doesn't know where that power comes from.

So from my box, what am I pulling constant 12v from? Both my (stop) nub on my box is 12 volt as well ad my (blinker )nub on my fuse box. I have tried both of the to go to the brake light switch as constant power. I know how a turn signal works. This is the issue iam having like I said before. The turn signal switch is not canceling out the brake lights. Same when I had it hooked to my reverse lights. If I turned my turn signal on when it was hooked to reverse lights they would blink. If I turned on reverse lights the would stay solid because the turn signals were not canceling out the reverse lights. This is the whole.problem I need to figure out.

What is hooked up incorrectly that the turn signals are not canceling out the brake lights when applied. Fine 1 prong on brake switch is 12v constant key on. Where is the wires from the other prong on the brake light switch going to or from.

Not sure how much clearer I can be. I need to figure out the correct route from my turn signal switch, to the fuse box, back to the brake switch, then from.the brake switch to column or back of car.

 

[RedFish]

Canceling is a mechanical thing. You have to have a working switch. Basic brake lamp switch is only 2 wires, pink and white. If you have more than the 2 you have a switch for cruise control. Turn signal does not go back to a fuse box. It goes to the rear harness and bulbs. You can confuse me. Wiring diagrams help. If you can get the rabbit to the Trix on the back of the box you can follow a wiring schematic.

 

[340six]

Did you check both the fluids? Brake fluids easy it's right there. Gotta really look for where they hide the

blinker fluid.​

Ok sorry

 

[67Dart273]

As suggested above, the trouble might be right in the TS column switch.

Make a truth table/ chart of the colors going in/ out of the switch and what they do. On something that late, the hazard switch is built into the TS switch, and it too can be a problem. Wiggle the heck out of it and try again

What goes into the column TS switch

Switched power from the brake light switch, which is powered at all times
Full time power from the hazard flasher
Key switched power from the turn signal flasher.

There are no ground / grounding circuits in the TS switch

Outputs:

Left rear turn/ stop
Right rear turn/ stop

Left front turn, which branches to feed the indicator lamps
Right front turn, which branches to feed the indicator lamps

With the TS switch centered, the turn flasher feeds nothing. The brake switch feeds both rear lamps, tied together

With the TS switch to left, brake lamp power is routed only to the right, and turn flasher power feeds both left front and left rear.

Opposite of course, with right turn

With the hazard switch engaged, it ties ALL output lines together, the outgoing rear brake line and the two fronts, all tied to the power from the hazard flasher

 

[quartermilepass]

As suggested above, the trouble might be right in the TS column switch.

Make a truth table/ chart of the colors going in/ out of the switch and what they do. On something that late, the hazard switch is built into the TS switch, and it too can be a problem. Wiggle the heck out of it and try again

What goes into the column TS switch

Switched power from the brake light switch, which is powered at all times
Full time power from the hazard flasher
Key switched power from the turn signal flasher.

There are no ground / grounding circuits in the TS switch

Outputs:

Left rear turn/ stop
Right rear turn/ stop

Left front turn, which branches to feed the indicator lamps
Right front turn, which branches to feed the indicator lamps

With the TS switch centered, the turn flasher feeds nothing. The brake switch feeds both rear lamps, tied together

With the TS switch to left, brake lamp power is routed only to the right, and turn flasher power feeds both left front and left rear.

Opposite of course, with right turn

With the hazard switch engaged, it ties ALL output lines together, the outgoing rear brake line and the two fronts, all tied to the power from the hazard flasher

Iam obviously missing something easy here.

I have 12v power going into the brake switch.
Where does the wire from the other prong on the brake light switch go to.

Do the wires coming from the column (left turn signal and right turn signal ) also carry the power to the back of the car. I assume yes. What iam missing is where do the brake wires integrate to the turn signal wires to cancel out. I can not get a correct diagram to follow. We have 3 chassis books here and the diagrams do not show what we are working on.