E-Bodies.org Cuda Challenger Forum

Technical Shop => Electrical & Audio => Topic started by: jrgoodman on September 22, 2020, 12:13:04 PM

Title: Turn Signal Questions
Post by: jrgoodman on September 22, 2020, 12:13:04 PM
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
Title: Re: Turn Signal Questions
Post by: dodj on September 22, 2020, 04:38:21 PM
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.
Title: Re: Turn Signal Questions
Post by: anlauto on September 22, 2020, 06:23:52 PM
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.  :alan2cents:
Title: Re: Turn Signal Questions
Post by: GoodysGotaCuda on September 22, 2020, 07:46:56 PM
This doesn't particularly sound like a switch issue, to me.

From what I recall:

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

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.
Title: Re: Turn Signal Questions
Post by: jrgoodman on September 22, 2020, 08:44:07 PM
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.
Title: Re: Turn Signal Questions
Post by: Chryco Psycho on September 22, 2020, 09:08:42 PM
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 .
Title: Re: Turn Signal Questions
Post by: jrgoodman on September 22, 2020, 09:11:42 PM
what is this flasher for?
Title: Re: Turn Signal Questions
Post by: klarish on September 22, 2020, 11:36:40 PM
the hazards
Title: Re: Turn Signal Questions
Post by: dodj on September 23, 2020, 04:10:19 AM
Quote from: jrgoodman on September 22, 2020, 08:44:07 PM
  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.
Title: Re: Turn Signal Questions
Post by: Jay Bee on September 23, 2020, 04:58:18 AM
Here's a pic I posted in some other thread
Title: Re: Turn Signal Questions
Post by: 73_Cuda_4_Me on September 23, 2020, 06:59:56 AM
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...
Title: Re: Turn Signal Questions
Post by: anlauto on September 23, 2020, 07:04:02 AM
There is no flasher on the fuse panel, that's the horn relay :alan2cents: