[BonzoHansen]

I've used http://www.waytekwire.com/ Maybe not cheapest, but good stuff.

I've picked up thhese links along the line too.
http://www.wiringproducts.com/index1.html
http://currentperformance.com/Connec...onnectors.html
http://www.madelectrical.com/index.shtml (hard to contact, but very knowledible, quality products)
http://www.americanautowire.com/ (great harnesses, but not really what you are looking for)
http://www.mcminone.com/search.asp?keyword=relay