Hi r3v,
I've googled to the end of the internet and cannot seem to find the right answer, or I'm just not smart enough to understand the wiring schematics. Essentially, when removing the previous owner's aftermarket head unit, a loose, brown wire with black stripe came out. I'm talking about a 12" long piece of wire (definitely an OEM wire) not connected to anything. Stripped back on one end and a clean cut on the other as though it broke off somewhere. I dug in behind the dash but cannot find the end of that wire, or determine where it was coming from directly. There were a total of 3 brown wires with black stripes going to the HU area, though I can't seem to figure out where this one was supposed to go. I have been getting blown fuse #23, which I traced to the headlight switch. I replaced the switch, to no avail. I decided to cut the brown wire with black stripe about 5" up from the headlight switch plug (just to test), assuming it was the broken wire that came out with the aftermarket HU and sure enough, no more short. This leads me to believe the remaining wire from the12" piece of brow/black wire that came out with the aftermarket H/U is shorting out somewhere inside the dash. Easy enough, I can run a fresh wire from the headlight switch plug to wherever it needs to go, but that's the thing... I don't know what this wire does, or where it should go. Is it possibly the illumination wire? Obviously, the car runs without it, but I assume it is needed somewhere. Can anyone advise? It would be super helpful!
1987 325i Vert
I think the relevant page of this manual is 6100-2, but it might as well be a foreign language to me
Thank you!
JD
I've googled to the end of the internet and cannot seem to find the right answer, or I'm just not smart enough to understand the wiring schematics. Essentially, when removing the previous owner's aftermarket head unit, a loose, brown wire with black stripe came out. I'm talking about a 12" long piece of wire (definitely an OEM wire) not connected to anything. Stripped back on one end and a clean cut on the other as though it broke off somewhere. I dug in behind the dash but cannot find the end of that wire, or determine where it was coming from directly. There were a total of 3 brown wires with black stripes going to the HU area, though I can't seem to figure out where this one was supposed to go. I have been getting blown fuse #23, which I traced to the headlight switch. I replaced the switch, to no avail. I decided to cut the brown wire with black stripe about 5" up from the headlight switch plug (just to test), assuming it was the broken wire that came out with the aftermarket HU and sure enough, no more short. This leads me to believe the remaining wire from the12" piece of brow/black wire that came out with the aftermarket H/U is shorting out somewhere inside the dash. Easy enough, I can run a fresh wire from the headlight switch plug to wherever it needs to go, but that's the thing... I don't know what this wire does, or where it should go. Is it possibly the illumination wire? Obviously, the car runs without it, but I assume it is needed somewhere. Can anyone advise? It would be super helpful!
1987 325i Vert
I think the relevant page of this manual is 6100-2, but it might as well be a foreign language to me
Thank you!
JD
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