Turn Signal Questions

[jrgoodman]

Ok my right turn signal blinks, slowly but blinks - the right side, just stays on.  Check the bulbs, and grounds, all seems ok, flasher works, brake light works and taillights and parking lights work - what can I check?  getting ready to change the switch, though I dont think that is the issue -   looking underneath, I have 3 plugs with no home - anyone know what they go to picture attached -   thanks for the help

[dodj]

One of those plugs looks like one for the radio?  Not sure.
But for the turn signals,  I'd first swap out the flasher,  I believe it is the one on the backside of the ashtray. Then i would inspect and clean all the turn signal grounds.  Front and rear. Then check all the bulbs,  make sure they are the right type.  Resistance check with a meter to ensure they are good.

[anlauto]

I would start with the flasher unit. There are two in the car, maybe just try switching them see if it makes a difference.

That three wire plug is for cornering lights or something like that on C Bodies, all aftermarket switches like the TW7 come with the extra harness for a universal fit. 

[GoodysGotaCuda]

This doesn't particularly sound like a switch issue, to me.

From what I recall:

• One flasher is for the turn signals [both left and right] and one flasher is for the hazards
• The flasher needs a load to "flash", the heat generated by the load will make the metal connection bend and break the circuit, making it flash.
• A weak ground will can allow for enough current to go through the light but not enough load to make the flasher blink. This sounds like your right side.
  
• A slow blink can be a combination of a poor ground and low voltage getting to the flasher and light. What is the battery voltage or running voltage when you are trying this?
  
  • Mopars are notorious for dirty bulkhead connections which can lead to a considerable voltage drop as the wiring makes its way from the battery, through the firewall and to the turn signal switch. It doesn't make much of a voltage drop to cause a slow blink.

The best way I would test the poor ground theory is to:

• First thing is to make sure you have a battery to body ground. If your battery negative cable goes only to the block and not the body, that is not ideal. You want a lead going directly to a solid body ground as well as the block.
• Take some extra wire and strip 1.5" off of it and wrap it around the bulb socket metal, make sure it's bare metal on the socket. Do this for two lights at a time, Front-Left and Rear-Left, for example
• Take the other end and put in on a good ground [battery post would be ideal]
• Try the left blinker

If that works for the left side, you have a bad ground somewhere near the socket. The light bulbs ground themselves through the metal casing of the socket, there should be a wire attached to/soldered to the socket going straight to a body ground.

[jrgoodman]

still havent found a 2nd flasher and pictures of the one behind the ashtray?  When I disconnected the flasher from the fuse panel - nothing flashed, so thats the flasher I replaced and maybe its not strong enough....   

The weak battery ground, going only to motor, sounds like my issue.  I had a weak ground on the fuel sender and a stronger ground fixed it.

[Chryco Psycho]

The factory negative cable connects both to the engine & the rad wall where the headlights ground , adding that ground should halp , also adding relays will really help the headlights & the headlight circuit as it removes all of the load from the headlight circuit & dircts power to the headlight from the start relay making them brighter .

[jrgoodman]

what is this flasher for?

[klarish]

the hazards

[dodj]

  When I disconnected the flasher from the fuse panel

If stock, there is no flasher on the fuse panel.

For the ashtray flasher, lie on your back on the passenger side and look up behind the dash under the ashtray. The flasher is mounted on the side of the ashtray frame.

[Jay Bee]

Here's a pic I posted in some other thread

[73_Cuda_4_Me]

Check to make sure that the ground wire connector on the front turn signal lamps (which is a separate connector on mine), are both plugged in... my right turn signal's ground connector had loosened, and caused a similar symptom...

[anlauto]

There is no flasher on the fuse panel, that's the horn relay