06-24-2014, 09:44 AM
Soldered is great. U simply need a standard automotive style 40a spdt found at parts store for around 5 bucks. Not sure I understand what part of that harness u have connected to ur cooling fan. The fan shld be wired directly to the battery w 12awg all copper min via a relay triggered by ur thermostat. There also shld be a fuse at the pos battery connection feeding terminal 30 on the relay. Prewired fan relay harnesses shld be available to simplify things or I can help u with a diagram. If u were closer u cld swing by my shop n I cld help.