Interesting electrical question

Posted By: swifter

Interesting electrical question - 03/29/10 11:07 PM

OK-- Just put my new dash assembly in"Fast Lane west" for what I thought was for the last time HaHa,SO I went to try everything out--Now when I apply the brakes the turn signal lights light up on the dash ??? otherwise everything works the way it should blinkers,Hazards --Now I did change from a gm style headlight switch(painless) to a Mopar original headlight switch--What did I wire wrong

If you can point me in the right direction--
PS__ when I tried everything with the GM type switch this did not happen Thanks Steve

Posted By: buildanother

Re: Interesting electrical question - 03/29/10 11:15 PM

Sounds like another ground issue. Are the parking lights and dash lights also coming on when stepping on brake?

Posted By: swifter

Re: Interesting electrical question - 03/29/10 11:17 PM

N0 Just the turn signals man I went to the extreme on the grounding did not want any ground issues--Steve

Posted By: RemCharger

Re: Interesting electrical question - 03/29/10 11:30 PM

Sounds like something to do with the switch wiring. The common denominator between the brakes and the signals .... is the switch.

Posted By: Noblewk

Re: Interesting electrical question - 03/29/10 11:35 PM

I agree with the ground issue. When you say "turn signal lights" do you mean both of them in the dash or all 4 plus the dash. Also if it is all 4 will they blink when pressing the brake.

Back in the 70's my cousin had a 4 speed car that would have his "reverse" lights on when he turned on his radio.

Posted By: Curt

Re: Interesting electrical question - 03/29/10 11:35 PM

Just wondering if you are using a fiberglass front lower valance?
Curt

Posted By: swifter

Re: Interesting electrical question - 03/29/10 11:41 PM

No plastic and It is just the turn signal indicators on the dash you know the left and right indicators --Steve

Posted By: Noblewk

Re: Interesting electrical question - 03/29/10 11:47 PM

Ground the dash backplane to your steering column and your problem should go away.

Posted By: swifter

Re: Interesting electrical question - 03/30/10 12:13 AM

Dash backplane??? these are all autometer gauges in a fast lane west insert all the gauges are grounded separate to one main ground--could it be the ground from the headlight switch this is also grounded separate--Steve this did not happen with gm headlight switch only with the mopar headlight switch that's why i think i got some wiring messed up when i switched back to the mopar switch

Posted By: Noblewk

Re: Interesting electrical question - 03/30/10 12:20 AM

What are the "turn indicators" grounded to?

Posted By: SixDRacing

Re: Interesting electrical question - 03/30/10 12:32 AM

do the turn signals work?

Posted By: swifter

Re: Interesting electrical question - 03/30/10 12:45 AM

Everything works great--turn signals--hazards but when i push on the brake the turn signal indicators come on--yes everything works like it should turn signals flash--hazards work --the gauges are grounded directly to the main ground from the batt I ran to the front of the car

Posted By: RapidRobert

Re: Interesting electrical question - 03/30/10 01:03 AM

Quote:

when i push on the brake the turn signal indicators come on--

I'd start at the brake sw "out" line (white wire) and trace downstream at each connection to find where it is bleeding over and/or trace upstream from the indicator lights printed circuit copper strip & see how it is being improperly fed from the brake light circuit. www.mymopar.com has wiring diagrams so you can know the colors

Posted By: 71_deputy

Re: Interesting electrical question - 03/30/10 12:19 PM

does the front marker lights turn on too???

what about the rears???

if the fronts do and the rears not- then the wiring is reversed in the turn signal switch from front to back!

normally when brake is turned on- only power to the rear lights are on- front and dash signals are not part of the brake circuit.

so if your not using a factory mopar harness or someone has been monkeying around by resplicing the wires- you have a problem. first double check the wiring at the turn signal switch to make sure nothing is changed.
also make sure the tail lights are both grounded good!!!

my

Posted By: SixDRacing

Re: Interesting electrical question - 03/30/10 12:36 PM

test for correct wiring alignment at the turn signal switch connector. it looks like you are have the turn indicater lights on the dash connected to the rear turn signal wires. they need to be on the front wiring.

Posted By: NachoRT74

Re: Interesting electrical question - 03/30/10 06:12 PM

Quote:

test for correct wiring alignment at the turn signal switch connector. it looks like you are have the turn indicater lights on the dash connected to the rear turn signal wires. they need to be on the front wiring.

agreed...

Mopars have one wire for each corner turn light. Lighter colors ( tan and light green ) goes to fronts. Brown and Dark green go to rear. Dash pilots are hooked to front turning lights to save from light up when braking, being this same dark wires are used to brakes when turning switch or hazzards are in rest position ( closed circuit for brakes and open for the other two ).

When you turn on turns or hazzards, the brakes function circuit is opened and turn or hazzards circuit are closed ( except for one side when turning ) this is for 70s and laters.

We must remmeber turning switchs are really a "matrix" what routes the power depending on required function... the REAL SWITCHES are both flashers and brakes pedal switch.

I think you hooked wrong somehow rear and fronts. Posibly when pressing brakes you have also fronts being turned on instead rears.

Or

Dunno how much you modified wiring to just hook up dash pilots on wrong side. Normally dash pilots are spliced into the same bulhead terminals to fronts

Posted By: Curt

Re: Interesting electrical question - 03/30/10 10:58 PM

I used a fiberglass lower valance and a similar thing happened except when I turned on the headlights the indicators glowed dimly. Ran a ground to the combo front lamps and problem went away
Curt

Posted By: 451Mopar

Re: Interesting electrical question - 03/31/10 02:06 AM

Turn signal indicator lights in dash coming on with brake lights indicates the rear brake/turn signal bulbs are not grounded and the brake lights are grounding through the turn signal side of the bulb through the dash signal indicators.

Ground the rear bulb housings.