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Post by 71se3834v on Mar 11, 2019 7:12:31 GMT -5
Great diagnosis procedure Nacho! I have seen light bulb filiments break and touch the other filiment. Thinking possibly brake light filiment touching parking filiment so when brakes are applied power is feeding back into parking light circuit?
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Post by Nacho-RT74 on Mar 11, 2019 7:17:47 GMT -5
yes, there is a chance for that... or using wrong bulbs, like single contact one closing circuit on socket between points. Or correct bulb but installed on half way of the twist
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Post by Nacho-RT74 on Mar 11, 2019 7:22:38 GMT -5
or the socket bakelite holding points inside got the keys broken and inserting bulbs can turn around and get in the middle of bulb points
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Post by legolen on Mar 12, 2019 18:29:56 GMT -5
Ok just got done pulling the bulbs and checking them in turn. The bulbs themselves are good. I pulled the center bulb everything worked fine. Put center bulb back in and pulled the other bulb everything worked fine. Only when both bulbs are in the problem occurs. I am guessing I have a bad socket or a wire between the 2 sockets.
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Post by Nacho-RT74 on Mar 13, 2019 14:28:09 GMT -5
damn... problem is located but is being hard to define what exactly could be the problem LOL
thinking!
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Post by Nacho-RT74 on Mar 13, 2019 14:34:31 GMT -5
right now I can't just think on somekind of ground issue JUST AT passenger tail light housing BUT, they are plastic, so the ground comes from driver side tail light at trunk location. HOWEVER ground wire to passenger side could be weak, or partially broken. The lack of ground could be causing problems with the added load on dual bulbs.
ground wire is a gray one... peel it off a bit ( just on passenger side ) somewhere and ground it straight to bumper brackets with a small jumper wire, or even license plate bracket.
you could try also clean the terminals on rubber plugs before peel the wire off a bit.
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Post by 71se3834v on Mar 13, 2019 20:27:24 GMT -5
Bad ground could be causing a feedback through the park light circuit. When I was in school they called it "crazy lights" when you turned on a turn signal and all lights on both sides blinked slightly. Last year my pass. front turn signal socket lost contact with the metal housing causing the power to feed through the park light into the drivers side. When I cleaned it up it also solved the problem of my dash pass side turn indicator light glowing when ever the park lights were on. Moral of the story? When you have an electrical problem always check your grounds.
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Post by legolen on Mar 14, 2019 14:50:12 GMT -5
I realized that when I encountered the break light issue I never finished checking the rest of the lights. After disconnecting the tail lights (known problem) I went to turn on the headlights and found that my driver side turn signal lit up with the headlights. Turn signals work fine when tail lights disconnected and lights are off. At this point I think I will disconnect all the light wire harnesses, lights etc and hook up one at a time and test after reinstalling each one. If that doesn’t work I will look for new harnesses, and whatever switches I can find. After 2 years of work this is the last hurdle before I am on the road.
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Post by Nacho-RT74 on Mar 14, 2019 17:07:20 GMT -5
Bad ground could be causing a feedback through the park light circuit. thats why I told what I told, but need to find where is exactly the ground issue. Let's say you reinforce the ground on stock location, cpould get everything betetr but not fixxing exactly at the damaged point
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Post by Nacho-RT74 on Mar 14, 2019 17:10:06 GMT -5
I went to turn on the headlights and found that my driver side turn signal lit up with the headlights. Turn signals work fine when tail lights disconnected and lights are off. I bet the socket must be spining kinda easily into the parking light housing. Just remove lense and bulb and smash the socket against the housing on couple of points and will fix that ground
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