Is there a way to wire the auxillary fan to be on high? a/c pressures high

[Gnarles]

Yes, true, but if he crosses the input wires, that is no longer an issue, as the output of the relay goes to the fuse before the fan or the resistor.

So yeah, the high speed uses a 30A, the low speed uses a 15A...but the high speed will be powering the fan, so no worries.

Gotcha. Yeah that should be fine if you jumper the high and low speeds before the relays.

[StereoInstaller1]

I can't tell if you are joking. It seems really easy in theory. Stick wire in the blade of each relay and pull one fuse. Does that sound like an ok plan? How else would you suggest? Thanks.

jumper the wires at the fan switch, done.

[clydesdale]

Hmmm, where is the fan switch? Are you talking about the thermo switch at the radiator? How would I jumper the fan switch? Sorry, for my ignorance on this and thanks for your help.

[Gnarles]

yeah he is talking about the thermo switch in the radiator. Jumper the high and low speed inputs.

[clydesdale]

Would I then take the fuse out that works the low speed? What is the advantage of doing it this way vs. jumpering at the relay? Thanks for the help.

[Gnarles]

I would think either location would work fine. It would be cleaner to do it at the thermo switch in my opinion. Removing fuse #3 would just ensure that the low speed circuit is open and not running in parallel with the high speed.

[clydesdale]

I wired it up in the relay box and it worked perfect. Thanks.