Electric fan setups

[LT1_Malibu]

How did everyone wire up their electric fans? I have a factory LT1 radiator and dual fans but I have a 5.3 truck harness and computer that was setup originally with a clutch fan, so no place on the fuse block for a relay and the PCM pin is blank where the wire would go. So did you guys make your own fan fuse block and them to a switch or did you tie them back through the original fuse block?

 

[LT1_Malibu]

This doesn't have to be something super specific for a LSX setup, just an idea of how to hook up some electric fans and what type of relays. Going off my Trans Am, the fans take a 40amp relay per fan, but im not sure how to wire them up exactly. Pin 42 on my PCM is blank and i would have to re-pin the computer to make it work with the computer settings, but the part that I'm really in the dark about is where on the fuse block is an open place for two more relays?