We should have looked this up while you were here. You could hook the relay energizing wire up to the brown/white wire to the generator fuse 6, 20A, the AIR control solenoid wire pink/black, or the electronic spark control module pink/black. The last two are on fuse 13, 10A.
The hot lead to the fans can be hooked up to the red junction box with a fused circuit. I used a fuse holder like the one on the rear of the relay mount that we straightened while you are here. If you need one, I have an extra. If you have heavier wire than the fuse holder, it is not a problem, because of the short length of the smaller wire. If the wiring harness is complete with a fused lead, disregard, and hook to the red junction box.