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turn signal problem

Posted By: AB&E

turn signal problem - 05/11/11 12:07 AM

okay I am wondering if anyone can give me a few ideas why my front turn signal & fender signal will not work ? everything else does except one front signal & it does not light up in side on dash either.any thoughts on this would be its on a 70 cuda
thanks abe
Posted By: NachoRT74

Re: turn signal problem - 05/11/11 12:10 AM

everything points out to damaged turning switch. Pilot dash lighst are spliced on same front turning signals. Wires under the column are TAN and LIGHT GREEN.

or maybe those wires or terminals are some loosen
Posted By: AB&E

Re: turn signal problem - 05/11/11 12:15 AM

Quote:

everything points out to damaged turning switch. Pilot dash lighst are spliced on same front turning signals. Wires under the column are TAN and LIGHT GREEN.

or maybe those wires or terminals are some loosen



I had ecs restore column & ever since I have had problem. the turn lever feels a little funky.
Posted By: RapidRobert

Re: turn signal problem - 05/11/11 12:21 AM

Quote:

I had ecs restore column & ever since I have had problem. the turn lever feels a little funky.

I'd pull the st wheel and have a look see & seperate the ts/brake electrical connector dangling under the column & Ohm it w the stalk up and down. Does that TS/fender indicator light up when the 4 way flashers are kicked on?
Posted By: AB&E

Re: turn signal problem - 05/11/11 12:39 AM

I will have to check to see if inside works on flasher I do not remember had trouble last year & its time to drive again.
If it does flash inside with flashers on what does that tell u It tells me nothing as I am lost
Posted By: RapidRobert

Re: turn signal problem - 05/11/11 12:51 AM

Quote:

If it does flash inside with flashers on what does that tell u

That from the 4 way flashers out to the fender is OK (it "turn signals/flashers" use the same large filament in the 2 filament 1157 bulb). What Nacho said I'd start by checking out the TS sw under the st wheel
Posted By: NachoRT74

Re: turn signal problem - 05/11/11 04:49 AM

if you have rears flashing, flashers has nothing to do on fail.

the only way you can get fronts failing and not rear ( hazzards or turning ) is turning signal damaged or related wires broken or loosen at plug.

front an rear circuits are separated to be able to feed brakes just to rear.
Posted By: 383man

Re: turn signal problem - 05/11/11 06:47 AM

If it lights up on the hazzard flashers then it would have to be the turn signal switch. Thats because both the turn signal and hazzard circuts share the same wires from the switch to the lights out front. It just changes the power source that feeds it in the switch. Turn signals are ign feed and hazzards are hot all the time. If you can get a wiring schematic just find the right color feed to that front circuit and test it at the switch for 12 volts coming out of it with the key on and turn signal on. If it has no power like that it is the switch since the other lights work and share the same feed. Ron
Posted By: therocks

Re: turn signal problem - 05/11/11 01:44 PM

I agree with Ron.My 65 will sometimes not light on DS.The stem screw would work loose and not operate the switch all the way.Also as stated get a service manual.They are invaluable.Rocky
Posted By: stumpy

Re: turn signal problem - 05/11/11 04:56 PM

Make sure the socket is well grounded. That will cause the same trouble and will drive you nuts trying to find it.
Posted By: NachoRT74

Re: turn signal problem - 05/11/11 05:05 PM

Quote:

If you can get a wiring schematic just find the right color feed to that front circuit and test it at the switch for 12 volts coming out of it with the key on and turn signal on. If it has no power like that it is the switch since the other lights work and share the same feed. Ron



I already told the colors on my first reply TAN one side and LIGHT GREEN the other side
Posted By: NachoRT74

Re: turn signal problem - 05/11/11 05:07 PM

Quote:

Make sure the socket is well grounded. That will cause the same trouble and will drive you nuts trying to find it.




mmmm actually not if you don't have dash pilot lights either. sounds like a positive fail and not a ground fail.

a ground fail in front turning lights will mostly sure also dim the pilot lights on dash when you turn on the parking lights
Posted By: 383man

Re: turn signal problem - 05/11/11 07:02 PM

Quote:

Quote:

If you can get a wiring schematic just find the right color feed to that front circuit and test it at the switch for 12 volts coming out of it with the key on and turn signal on. If it has no power like that it is the switch since the other lights work and share the same feed. Ron



I already told the colors on my first reply TAN one side and LIGHT GREEN the other side



Then test the one to the side your problem is on. It will tell you alot as to where the problem is.
Usually when I have a ground problem in a front lite many times it will light the turn signal indicator on the dash when you put the park or headlites on as it will backfeed thru that circuit looking for a ground. Ron
Posted By: AB&E

Re: turn signal problem - 05/11/11 07:20 PM

If my memory is working I checked for power at the socket & no power. I do not believe it is ground as there is no bleed through & the indicator on dash does nothing I was going to just run a wire from rear harness to front light but would rather not. But I do not like lights not working
thanks guys I will look over again this weekend as we have rain again & again &again whers the sunshine this sucks
Posted By: NachoRT74

Re: turn signal problem - 05/12/11 04:41 PM

Good luck buddy! I hope will be easy to fix because the RIGHT 70/71 B and E bodies turn signals are REALLY HARD TO COME BY and no reproed yet.


Turn switch availables will require a trimming job on hazzard knob

It could be not more than loosen contacts inside switch assembly what could be fixed though taking care of plastic rivets if needs to be dissasembled.

I would try to fix firts and if not, then replace.

Still the hopes are just on a broken wire below/outside the column
Posted By: stumpy

Re: turn signal problem - 05/12/11 05:25 PM

Sorry to disagree with you Nacho but in my years as a mechanic I have seen a bad socket ground cause a no turn indicator light on the dash a number of times. It's due to the fact the circuit doesn't draw enough amperes to operate the flasher. Bad grounds can cause all kinds of weird stuff to happen.
Posted By: 383man

Re: turn signal problem - 05/12/11 05:33 PM

Actually what I meant was that many times a bad ground in a front socket or even a shorted element in the bulb can make the turn signal indicator on the dash lite up but not when the turn signal is turned on but when the lites (park or headlites) are turned on. What happens it the park bulb has no ground and will look for a ground by backfeeding up the turn signal dash indicator circuit and finding a ground liteing up the Turn signal ind on the dash. So if a signal indicator lites on the dash with the lites on you may have a ground in that front circuit. Thats all I meant and even it the ind dont come on you could still have a ground problem. Ron
Posted By: stumpy

Re: turn signal problem - 05/12/11 05:46 PM

I've seen that happen also. Like I said bad grounds can cause weird stuuf.
Posted By: MoparMarq

Re: turn signal problem - 05/12/11 06:05 PM

Quote:

If it lights up on the hazzard flashers then it would have to be the turn signal switch. Thats because both the turn signal and hazzard circuts share the same wires from the switch to the lights out front. It just changes the power source that feeds it in the switch. Turn signals are ign feed and hazzards are hot all the time. If you can get a wiring schematic just find the right color feed to that front circuit and test it at the switch for 12 volts coming out of it with the key on and turn signal on. If it has no power like that it is the switch since the other lights work and share the same feed. Ron



Agreed.

Quick way to test for good circuitry out to the suspect bulbs (at front turn signal/running lamp assembly, hood mounted bulb, and dash bulb) is disconnect turn signal harness from dash harness.
Then apply a 12V jumper from battery hot terminal on fuse block to the terminal on the dash side of the harness of the suspect corner. TAN color wire is right front, LIGHT GREEN is left front.
If all the lights go on (turn signal at front, hood mounted bulb, and dash bulb), then turn signal switch (or terminal in turn signal switch side of harness connector) is most likely culprit.

If one or more of the bulbs do not light, bad bulb(s) or bad grounds are suspect.

Turn signal switches are repro'd for most of our cars. Not to worry.

Good luck. Keep us posted.

-Marq
Posted By: NachoRT74

Re: turn signal problem - 05/13/11 05:20 AM

Quote:


Turn signal switches are repro'd for most of our cars. Not to worry.

Good luck. Keep us posted.

-Marq



not really 70/71s yet, but as stated, lates will work with a hazzard knob trimming job.

------


Yes I'm agreed on ground fails makes weird stuff LOL, but on this case, I think a ground fail on front turning signals will show easier what Ron said ( and also I replied somewhere lol ), more than any other fail...

either way grounds are something to check too
Posted By: AB&E

Re: turn signal problem - 05/15/11 07:23 PM

okay guys its sunday & raining again so as promised I have news If i turn flashers on all works great. if I try blinkers seperate the drivers side front dash,fender &grill light have no power rear works great so it sounds like to me either connection at harness from column or blinker switch? I do know the lever feels incorrect & if you move it a little the rear will not flash but the fronts never show sign of life from playing with lever so It is probably the switch or just loose inside? what do you guys think Sorry for all the jibber but please give me your input
Posted By: AB&E

Re: turn signal problem - 05/15/11 09:00 PM

Quote:

If it lights up on the hazzard flashers then it would have to be the turn signal switch. Thats because both the turn signal and hazzard circuts share the same wires from the switch to the lights out front. It just changes the power source that feeds it in the switch. Turn signals are ign feed and hazzards are hot all the time. If you can get a wiring schematic just find the right color feed to that front circuit and test it at the switch for 12 volts coming out of it with the key on and turn signal on. If it has no power like that it is the switch since the other lights work and share the same feed. Ron



Well problem solved Had an extra coulmn so swapped out switch and all is legal thanks for the help this has been like this since ECS restored column. though I remember shipping box damaged (ups) & the lever was sloppy. thanks again guys I DISLIKE WIRING IT SUCKS.
Posted By: RapidRobert

Re: turn signal problem - 05/16/11 03:21 AM

Quote:

though I remember shipping box damaged (ups) & the lever was sloppy.

I got a fuel pump in the mail in a softball sized square box and the arm was sticking thru the side of the box . I dont think I could have duplicated that if I'd have fastball tossed it against a cement wall but they managed to do so in regular mail transit. Dont remem if it was UPS or not & I think it might have been the post office (usps).Glad ya got it
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