I used Molex connectors when I restored my TR4A. Those are the white nylon connectors often used in computers for power-supply connections. You can get them on eBay or various electronic suppliers, like Mouser and Digikey. They are very reliable, but not weatherproof, so you probably don't want to use them where they could get wet.
I have also noticed a number of OEM-style connectors available from Amazon. I didn't use them, but they seemed like a good option--especially since many are sealed.
For the spade connections, I used new connectors, soldered them, and insulated them with shrink-wrap tubing.
Here's the story:
> Body electrics <