Looking for high quality wire and connector brands.

It was stated that you were doing older car wiring. Many of the older car connections were a "Packard" connector. So unless you are upgrading everything, it may be handy to keep some on hand. I find that DelCity.com has a decent assortment of connectors and wire. Also, I use the GXL wire over the TXL, mostly for added heat resistance in engine compartments.