I Bypassed the stock fan controls totally in summer time here. I bought 2 Fan connectors with pigtails and wired my own 70 amp relays. They are wired to same switch for my intercooler fans and trans cooler fans. Sounds like a dam jet engine with 6 fans on full blast. I reconnect stock connectors and controls when it starts cooling down in november.
On that note, I actually build kits for the Lightning/Harley truck guys that install the Raptor fans into their trucks. Uses plug & play connectors, and controls the fans off a 175* temp sensor switch that goes into the block, or manually triggered on via an in-cab switch. There's 3 modes of operation...
1- fan 1 auto/fan 2 off
2- fan 1 auto/fan