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Just to be clear here, you are saying you have power to the brake light sockets on the back?
Thanks for that info. Please give me a moment to pull up the wiring diagram and see what I can do to help.
I assume you have replaced the bulbs already?
I am actually going to check that ground right now, please stand by.
Sorry, you lost me.
You have power at the white/tan wires out at the sockets but with a bulb in that socket you don't get brake lights?However when you put it in the parking light socket you got brake lights when you step on the brake?
Just tested the bulb, my brain is in the wiring still.
Does the high mount brake light work?
They are all using the same grounding point G304 is the ground. However it would seem like if the parking lights and signals are working the ground should be good.
If you rig up something to connect the test light to on the power side, like a small piece of wire, you could then use the other end of the test light to check the ground. If it lights, then you know the ground is good. If not, then trace the ground and locate the break in it.
My diagram is showing solid black on the left and right, but black/white stripped on the high mount
But actually for the high mount it's G303 not 304 on the left hand drive model. Assuming you are in the US, this would mean it's a different grounding point, however possibly in the same harness.
And it also looks like it starts out solid red at the high mount socket and changes to bl/white
from what you are saying then, either the sockets themselves are no good or the bulbs. I do think that the bulb for the parking and turn signal should be a different bulb then the stop light, but still, you have all you should have when you are testing. Including a good ground source or the test light/meter wouldn't show any voltage with that test you just sent to me.
I am talking about the socket the light bulb goes into and I am sorry, I didn't get any notification that you replied to me.
I don't have a blow up of the circuit board so I cannot answer the question about continuity for you
I guess what I am seeing here is you have power on the right wire, and you have ground on the right wire, so it should stand to reason that the bulb or the socket is the issue. Since the socket is part of the circuit board, then the board would have to be the problem in my opinion, you have everything you need to light a bulb.
This is the only thing that makes any sense to me on this to be honest.
I am thinking one was went bad, don't notice, suddenly no brake lights and everyone notices!
I really think that's how it went down, they probably didn't go bad together, it just seems that way.
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Hadn't heard back and was wondering how you made out with this?
Do you need further assistance with this?Did replacing the boards resolve the issue?