On an 02 WRX Sedan wiring harness I have 2 radiator fan connectors(main fan and Sub fan). I took the high and low of each wire and twisted them together to the one "+" aftermarket side of 2 wire fan. I did the same for the sub fan. Is this right or do I select just the low or just the high? I figured I could pull a relay to the one I didn't want instead of re crimping. Also I was wondering will the sub fan work without me using aircondition functions because I did want both fans to work. Or do I want something completely different? One main plug?