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dash an running lights issue
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james24
Novice
Dec 16, 2012, 12:17 AM
Post #1 of 17
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dash an running lights issue
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hey guys needing some help read tons of forums bout dash/running lights not working ect but none helped so im working on a 1990 plymouth horizon, the problem is the trail/running lights an dashboard lights are not working when the headlights are turned on.The fuses an bulbs are fine an i tried 2 new light switches just to make sure it was not a faulty unit an they did nothing for it. So was thinking maybe a wires touching or bad connection an what not but what blows my mind is when i push the light switch an the headlights turn off BUT before it clicks to let me know the lights are off their is a sweet spot were the dashboard lights an running lights work properly! I can even use this dimmer switch to adjust the brightness of the dashboard but only at that certain spot, i tried tightening the female connector that the light switch plugs into cause they were a little loss thinking it could be something that simple but did not help at all. Im completely in the dark on this one guys any advice would be greatly appreciated!
Thanks
James
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Hammer Time
Ultimate Carjunky
/ Moderator
Dec 16, 2012, 6:02 AM
Post #2 of 17
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Re: dash an running lights issue
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Sounds like you got a run of junk switches.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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nickwarner
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Dec 16, 2012, 8:47 AM
Post #3 of 17
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Re: dash an running lights issue
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Are you using new switches or used ones? My local O-Reilly shows 3 different brands of switch for this, price range of $19-$29.
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Sidom
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Dec 16, 2012, 10:05 AM
Post #4 of 17
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Re: dash an running lights issue
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Before we go to far, you need to clarifiy if these are new switches out of the box or new switches out of the wrecking yard which would be referred to as "used switches"...
If they are new then they could be bad switches, it happens.
Maybe one of the guys could post a wiring diagram of the circuit for you. Just find the circuit that power those lights and see if you are losing power or ground when the switch is on & which one you get back when you go to the "sweet spot" , that will tell you which circuit is giving you the trouble..
(This post was edited by Sidom on Dec 16, 2012, 10:06 AM)
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james24
Novice
Dec 16, 2012, 1:11 PM
Post #5 of 17
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Re: dash an running lights issue
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they were new switches from the box that why i said i tried a few ones at the store since the new one i bought did not work they let me try 2 new ones+ the one i bought before hand to see if it would work.But since the running lights work(sorta) that rules out the simple stuff right? like bulbs fuses the switch an possible the ground? Thanks for the replies guys if you all need any other information just let me know im out messing around with it as we speak.
James
(This post was edited by james24 on Dec 16, 2012, 1:31 PM)
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Hammer Time
Ultimate Carjunky
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Dec 16, 2012, 1:41 PM
Post #6 of 17
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Re: dash an running lights issue
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If you can manipulate the switch and get the lights to work normally, something is wrong with the switch.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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james24
Novice
Dec 16, 2012, 1:52 PM
Post #7 of 17
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Re: dash an running lights issue
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Was the original switch that would do that,and it would only turn on the running lights right after the head lights went off an before it clicked to let you know the headlights were turned off so that how i came to the conclusion the switch was bad the new ones would not work like that an i currently have the new one installed just cause im sure it needed it everything on the car that i know of is original, but i figured letting you all know that the old switch would turn the running lights on at that certain point would give you a better clue of what the problem is cause at the moment im completely in the dark ive got no idea were to go from here.
James
(This post was edited by james24 on Dec 16, 2012, 1:57 PM)
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Sidom
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Dec 16, 2012, 2:35 PM
Post #8 of 17
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Re: dash an running lights issue
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If you can have a diagram, see what wire goes to the running lights off the switch and check that wire for power when the switch is all the way on and then when you put it in the spot that makes it work. Is there 12v on that wire both times or only in the sweet spot?
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james24
Novice
Dec 16, 2012, 3:55 PM
Post #9 of 17
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Re: dash an running lights issue
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Ok so i tested the volts with a multimeter were the light switch hooks into an when the running lights are on the Solid Green wire has no juice, an when the headlights are on the peach, solid red an black an white stripped wires had no juice.i tested the running lights too in the back an obviously they had juice when it was in the (sweetspot) but none when the head lights were turned on. I dont have a wiring diagram but is there a way to jump the wires of one that has power to another safely an see if that would make the headlights work with the running lights on or vice versa?
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Sidom
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Dec 16, 2012, 4:24 PM
Post #10 of 17
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Re: dash an running lights issue
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Take the connecter off the switch. Turn the key on & check all the terminals with your voltmeter and a test light (if you have one).
Tell me how many terminals are in the connecter & how many of those terminals have 12v on them & how many of them will light up a test light.
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james24
Novice
Dec 16, 2012, 4:58 PM
Post #11 of 17
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Re: dash an running lights issue
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4 out of 9 had 12v an my test light has a blown bulb
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Sidom
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Dec 16, 2012, 5:17 PM
Post #12 of 17
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Re: dash an running lights issue
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I really can't find a good diagram on this...
Check your connecter, there should be a tan wire that has 12v with the key on.......There should be a black/yellow wire. This for the rear park lights. If you have a fused jumper, you could jump between those 2 terminals & the park lights should come on
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james24
Novice
Dec 16, 2012, 5:31 PM
Post #13 of 17
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Re: dash an running lights issue
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with the car on the tan an black/yellow wire both dont have any power running to it an this is the best i could find
link deleted not allowed its chassis wiring fig.25-26 at teh bottom closest one to my 1990 horizon. But hey man i really appreciate you taking your time to try an help me out!
James
(This post was edited by Hammer Time on Dec 16, 2012, 5:41 PM)
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Sidom
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Dec 16, 2012, 5:42 PM
Post #14 of 17
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Re: dash an running lights issue
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Check all your fuses again.....I believe that one should have a 5 amp fuse for it
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Hammer Time
Ultimate Carjunky
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Dec 16, 2012, 5:42 PM
Post #15 of 17
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Re: dash an running lights issue
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Don't post links. Your car wasn't on that page anyway. Close isn't good enough with a wiring diagram.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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james24
Novice
Dec 16, 2012, 5:50 PM
Post #16 of 17
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Re: dash an running lights issue
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(didnt know you couldnt post links lol )ok heres what i did with the headlights on the solid green wire i touched a wire to it an to the black/yellow wire an the tailights an headlights worked, also did the same to the tan wire the headlights an tail lights worked again an also did it to the red wire the headlights an tail lights came on again though i tried all 3 of the wires that had no power with the headlights on but none of the three let the dashlight come on figured id let you know what i did to make em work for a sec so maybe you can figure it out
(This post was edited by james24 on Dec 16, 2012, 5:52 PM)
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Sidom
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Dec 16, 2012, 6:25 PM
Post #17 of 17
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Re: dash an running lights issue
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Like I said just double check all the fuses to be sure.....A test light would be good or use your voltmeter......make sure there isn't more than one box
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