Tankowner,
Thanks for responding. When I say "narrow it down", I mean that I ran a volt meter between the battery 's negative post and the negative cable. With all the fuses taken out, there was still a 12 volt loss.

I did a test with the amp meter with all the fuses in, as you suggested, and it would show over 5 amps for a few seconds and then drop to .16 amps.

Compress Ignite - OK, so it may not be exactly cotton but it is some sort of fabric material; it looks like it's factory. When you unhook it, there's no power anywhere. It seems like it would be powering the fuses. It's pretty heavy guage wire. When I connect it or disconnect, I get sparks.

Thanks to both of you for all your help.