Hi I'm going to be using 2 spal fans on a FD v mount setup and want to use the the stock relays to power them they only have 2 wires pos/ground I want the ecu to control the fans and still be able to use the the ac button to manually turn the fans on I want to make a harness that connects to relays 1,2,4 to keep this function looking at the wiring diagram would I need to connect to relay 1's yellow/white relay 2's red yellow and relay 4's white wire to the positive then just ground the neg to a well placed chassis ground or to the fans black ground wire that's in the harness any advice would be greatly appreciated