As far as connectors, wiring, etc goes, we purchase all through dealer only type wholesalers. However, I have heard of a few flea markets with some pretty good selections. If you ever need a bulk supply of taps, connectors, etc that you can't seem to find anywhere, give me a shout. I don't know of any audio shops that resell this stuff to the public besides us-alot of locals here that do side work I guess...