Spal brushless fans

[streetrod don]

I have done several LS swaps and this is my second Gen 5 LT4 (72 C10). First time to use the brushless fans. PSI wiring harness. They sent me relays and a Dakota Digital controller, and told me that the 2 fan trigger wires in their harness will not be used. Spal tells me that I don’t need the relays and the DD controller will not work with their fan. DD tells me that there is no reason that it won’t. I am a pretty good wiring man but this has me a little confused. I tried wiring the fans direct to the battery and touched the small white wire to ground. Nothing! Help, please.