Buddy's TE 250 fan constantly on

I just added my switch to the connector that goes to the switch in the hose. I didn't want to cut it, since I'll probably add it back in, so I just used suitable gauge wire, soldered to the switch, and stuck the other (obviously stripped) ends in the connector. Then I taped it all up and used a zip-ty to secure it to the frame.

You could also use a tap splice or something similar to make it a little more neat.

Jimmy's buddy's bike doesn't have a switch in the hose like the newer 250/310Rs do. The ECU turns the fan on/off.

Still, it'd be pretty easy to wire up. or even toss the fan- once it's determined the ECU is getting good info.

For the 2011 TE310 I found the "Water temperature sensor" in the manual, pg 3, item 2. [Reference: Part #8000A6736 (USE PART # 8000H3649) $9.99]. My fan would rarely come on and I just blew a hole in a radiator hose! New hoses on the way, so I guess I should be sure to add a new temp sensor as well. The more I read, the more it seems like others have had the same issue.

I boil the rad fluid all the time, so maybe that fan should have been on a lot more! Even then, I might need an on/off switch. To be continued.