Good quality electrical connections & terminals

[Modena]

What have people used to wire their cars? I’m anxious to do a good job, and want quality terminals and quality wire. A have a decent ratcheting crimp tool, but I still question the quality and sturdiness of terminals like these;



I have done some reading on aircraft specification terminals, which have a larger wire crimp area and a better insulation “grab”, although I can’t seem to find anywhere that sells them.

Has anyone tried these sort with built-in heat-shrink?

Female Spade - Red - Pkt 8 - Self Sealing Quick Connectors - Jaycar Electronics


I’m talking about a body loom here, not necessarily an engine/ECU loom. I’d like to achieve OEM quality levels, but of course without the proprietary locking connectors that manufacturers use, what is the best type of terminals to use? Given that there will be many relays I suppose spade connectors will be plentiful, but what are the best ones to use?

Also what is a good source of quality size-matched wire? Narva etc from Autobahn et al doesn't really appeal.

I'd like to hear what different people have done in wiring, and how you rate the quality of connections made with certain products.