That's a valid point, and I'll keep it in mind if I intend to tow anything. At this point in time, I don't own any trailers and have no intent to tow anything with this vehicle. Thanks.
As far was the 18g wire goes, diagram 8W-51-2, shows 18g wire from the brake switch to the rest of everything. The high filament on an 1157 is ≈24W. Two of those (for each brake light), plus a 921 bulb (≈18W) is 66W. 66W @ 12V = 5.5amps. A wiring chart I have shows 18g wire is good for 7 amps @ 12V up to 20' of length.
Here's what I'm leaning towards more and more. Finer details still to be worked out. I may try to / have to make my own metal grounding/mounting plate inside instead of tearing it out of the export bodies. It might make some of the baffles easier to fit in. I'm fortunate enough to have access to a pretty well equipped fabrication shop at work. I'm not allowed to use that equipment, but I'm friends with those who are.
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