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Temp Switch Location


Jst2fst

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I'm having a hard time locating the temp switch on my cbr. I'm trying to put on an over ride switch for the fans and can't find the temp switch the only thing on my radiator is the fan no other wires. I thought I found it but not the right one. I'm looking over the wiring diagram and don't see it listed on the ones I have. All I see is the fan control relay and I don't wanna hook into it unless I have to.

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But based on what you've found I'm guessing it's the same.

Yea, I can see that now

if it doesnt have a fan switch, you will have to run a seperate power or ground(which ever activates it) to the fan itself

Ah, hell.... That was a second option I had to do. I was thinking of running of off the battery with an inline fuse 10amp should do I think

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Yea, I can see that now

Ah, hell.... That was a second option I had to do. I was thinking of running of off the battery with an inline fuse 10amp should do I think

i would think 10 amp fuse and 16 gauge wire should be plenty. i you can follow it or find it, i would just find out what feeds the fan there should be a relay under the seat or near the fuse box and just splice into the realy accivation wire that comes from the ecu

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i would think 10 amp fuse and 16 gauge wire should be plenty. i you can follow it or find it, i would just find out what feeds the fan there should be a relay under the seat or near the fuse box and just splice into the realy accivation wire that comes from the ecu

Yea. I found the fan control relay behind the left fairing. Its a four prong relay I just gotta find the right wire to tie it into or just run a power line to the fan just gonna go with whats easiest to do.

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Your ect (engine coolant temp) sensor comes off the engine to the ecu. Fan relay is controlled by the ecu. I would run 12v (through your switch) to the black/blue stripe wire coming off of the fan relay.

Gotcha I just replied to your post on 600rr.net thanks for the info

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I put an override on my FJR1300. Used a relay that fed the fan directly. If you're going to use the factory fan relay, you should put a diode on the signal wire coming from the ECU. You don't want to send battery power back through that.

Running the fan takes a ton of juice. You're going to be using it in traffic when your generator isn't making any current. The bike gives fan when it needs it. You don't need any more. I never used mine.

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You should run a wire to the control side of the relay, and let the relay do the higher current switching. The relay is probably controlled by a negative output from the ECU. You can run a negative (ground) wire to your switch, then from the switch to the relay. If I had a diagram or the bike, I could help you out with more specifics.

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