The fans came from Old Air products,
https://www.oldairproducts.com/produ...-72-50-7230s-7
and they come with a complete wiring harness with relays, all you have to do is connect one to the fans, the battery, the temp switch, and the ign on (trigger) switch.
I just wanted to know the best option for connecting the ign wire since the two locations in the fusebox are taken up. Since the power to run the fans is coming from the battery would it be okay to just add this wire to the others on the fusebox (ign unfused tabs) or would that draw too much off of them and cause problems.