Does anyone have a likely location for a tail-light short?
My running lamps are blowing fuses left and right. Initially it was once every couple months, now it's every day. I checked the door channels over the weekend briefly and didn't see any place there was a connector or the harness was loose.

Fuse #15 (passenger front and rear running lights, "aux lighting" (the lighting for climate control))
I suspect the passthrough to the trunk (didn't check the rear door channel, I only had 10 minutes) or the fuse box or under the kick panel. It's blown a 25 amp fuse (stupid me, that 25 amp fuse blew two dash lights. 7$ apiece dealer items.)

It seems like nobody has this problem but me. I do live on a horribly bumpy driveway, but anyone living in the mountains must have similar problems.
Driving over a set of mild railroad tracks blew it on multiple occasions.

I thought the short could be in the trunk, as when I washed it out the fuse blew instantly. (dried on scuzz from a dirt road and leaking tail-light seals. They've been replaced and so have the taillight sockets.)
I've tried to twist the wiring in the trunk to recreate the short, but it hasn't worked.
Also I noticed my fuse/relay board was loose in my panel today, I've been thinking I should take out my bulb out relay but it seems like it won't cause this sort of problem. I secured it and I think I'm the one who loosened it originally. Could there by a short underneath it? If so... I'll need to take out my radio and EQ to get to it, what about the side/kick panels for the center console?

I must have a positive wiring to ground short and I don't think it's in the front running light wiring. The fuses are now holding for about 5 seconds and blowing, regardless of brakes, rear fog lights, etc.
Does someone know where exactly the front side marker light wiring passes through the firewall?
thanks
-Will
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1990 740 Turbo, on its way to stock specs, maybe beyond

Maybe try unplugging your light connections one at a time to see if you can isolate the problem.

I did that months ago. The fuse blew instantaneously in all situations with everything unplugged. There's also always circuit continuity with the switch off and on (the plug socket board was unplugged) for all light circuits (I think reverse and blinkers were not continuous).

Tonight, I put in a fuse (bought a box of 25 for 8$ because 5/3$ gets expensive) and it didn't blow immediately. I noticed last time that I got a lot of radio static when I put in the fuse. I wiggled the entire fuse/relay mounting bracket (plastic) and the noise came and went. I now think the short is in either the fuse panel or in the trunk harness.

I want to double check that it's not the front right marker light. Does anyone know exactly where the side marker light passes through the firewall?

-Will
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1990 740 Turbo, on its way to stock specs, maybe beyond

Will,

You can pull the fusebox/relay board out of where it sits. No need to pull the radio, but you do need to take out the pocket (holds eq if so equipped) It unclips and the whole thing can be pulled out (with the shifter moved back to L). The wires are long enough going to the fuse panel to allow this. I had to replace the fuse panel on my '84 760 T because of melted/damaged plastic.

Dave