07 te450 fan mounting eletrical question

Need some help please. I dont want to fry anything.

I purchased a Trailtech light with it's own headlight switch mounted directly to the battery. That free'd up the old lo/hi beam switch. So my idea is to wire a 08 TE450 radiator fan to the old lo/hi beam switch for manual fan on/off. The fan is mounted, I have the old headlight wires coming out of the rats nest. There are 5 wires:

white, blue, black in one sheath

yellow/red, blue in the other.

Looking at the pdf shop manual wiring diagram, I cannot tell what to wire to the fan, and then I dont want it to be harmful as far as wattage goes.

So, to simplify my questions,

1. What 2 wires do I send to the fan to turn on the fan in the high beam position?

2. Is this a safe idea?

Wish I was smarter about this stuff. Thanks,

----John

I put a volt meter on the wires and did not get anything more than 1.5v.

I wonder if I need to have the circut closed on all 5 wires to get more volts.

Anyway, here are some pics of the old headlight wires if anybody has any tips for wiring them to the fan, (black and red).





Thanks,

----John

The saga continues.

I just fount the white and blue power the high beam. I wired them to the fan, and guess what, it dosent turn unless you give it some gas.

So, I will see about running a new set of wires from the battery to the switch and then the fan.

Done.

In case anyone ever wants to do the same, I ran the hot wire from the trailtech headlight hot just past the fuse directly into the highbeam switch wire (white) then back to the fan with the (black/green). The ground goes directly from the fan to the battery. It came out very clean.

It was easier than I tried making it at first.

On my 07 TC with electric start, I plugged into a white connector that looked like a headlight switch and used that. Picked up a connector from the Husky dealer and plugged in.