1968 barracuda signal problems

[brian 1972]

1. ok all park lights work. the right rear turn signal works, the left front turn signal light works but the other 2 turn signals dont. all four of the hazards work checked at the steering column 2 wires blink at the connection those 2 wires go up to hazard switch but were does the wire come from that goes to the back does it come from the hazard switch or somewhere else oh no dash lights either do the signals work off the round plug in back of dash

 

[ScampMike]

the dash MAY be a ground issue, this is where I would start anyway. your other issue is probably in the wiring - a loose connection somewhere would be what I would expect to find as you are getting some blinking in other locations.. it is really tough to diagnose this kind of thing without being there. Curious, when the turn signals that do work blink - it is a fast blinking or at normal speed?

 

[mguner]

Also could be the meticulous bending of the "cat whiskers" if you have installed a replacement signal switch. Takes a while to get them just right.

 

[Darthomas]

If both left and right turn signals work (front OR back, and the parking lights and brake lights, you may have contact buttons in the sockets that have corroded away.
Sometimes the solder buttons on the bottoms of the bulbs themselves get mashed down due to heat and continuous spring pressure.

 

[jbc426]

1. ok all park lights work. the right rear turn signal works, the left front turn signal light works but the other 2 turn signals dont. all four of the hazards work checked at the steering column 2 wires blink at the connection those 2 wires go up to hazard switch but were does the wire come from that goes to the back does it come from the hazard switch or somewhere else oh no dash lights either do the signals work off the round plug in back of dash

Time to get out the 12v test light and a wiring diagram, and start testing. The diagrams are available online. I've found grounds are the most likely culprit, followed by the turn signal switch mechanism.

 

[RedFish]

Your inst panel has 2 connectors , a round one that has 1 turn indicator and 2 illumination bulbs ( and more ) wired through it,,, Then a flat 3 wire connector on the other side that has 1 turn indicator and 2 more illumination bulbs wire through it.
See, I was going to mention that any time a turn indicator comes on with park lamps, there is a fault in the ground path of that front signal fixture. When the dash indicators don't work either, that tip doesn't help much. Having the hood indicators added into that model just complicates things more. Correct year model wiring diagrams are a must.

 

[67Dart273]

1. ok all park lights work. the right rear turn signal works, the left front turn signal light works but the other 2 turn signals dont. all four of the hazards work checked at the steering column 2 wires blink at the connection those 2 wires go up to hazard switch but were does the wire come from that goes to the back does it come from the hazard switch or somewhere else oh no dash lights either do the signals work off the round plug in back of dash

Think of the hazard as an "addition" and ignore it for now

1...Do the brake lights work?

2...Brake light switch power, and...........turn signal flasher power go INTO the turn signal switch. The switch selects what lamps are connected to what, that is........

"Centered" the brake light switch goes through the turn signal switch, and is routed to both rear lamps

"Left" turn the brake light switch is routed to the RIGHT rear lamp, but the LEFT is then connected to the flasher.

At the same time the TS switch also connects the flasher to the left front lamp.

3......Your dash indicators are branched off the front lamp wiring and simply go up to the cluster connector

4......HAZARD. This is actually simple.........

With the turn signal switch CENTERED, the TS switch connects both rear lamps togethre (for stop) and routes both of them to the brake light switch

Both front turn lamps are disconnected from anything else inside the TS switch

NOW the hazard switch is a special switch. It has 4 terminals. None of them are connected with it off, and all 4 are connected together with it "on."

Hazard flasher power goes to one pin
Left front lamp goes to one pin
Right front lamp goes to one pin
And the last goes to the brake light switch line

SO WITH the TS switch centered, and with the hazard switch "on".........

Hazard flasher power feeds into the hazard switch and is routed........

to left and to right front.........

and to brake light switch line,.........on into the TS switch, and back to BOTH rear turn / stop lamps.

If you get bound up, I would pull the hazard switch connector loose until you get the stop and turn lamps working, then ADD that connector and see what you have

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Access the turn signal switch with a lamp or meter, and get yourself a diagram/ shop manual. You can download them free from MyMopar. Some of them came from here

Look up the colors you need, and go through and check brake and turn at the connector. If you don't have it there, then no need to "bother" the rear harness at first