i was riding for 2 hours the lights and fan were working then i noticed i was overheating then i noticed my lights and fan wasnt working im pretty sure the overheating is from the fan not working what would cause the fan and lights to stop working?

 

How's the battery and connections? Has to have 12 volts for the fan and lights. Check that you're charging 14-14.5 volts to the battery at an idle or a little above. If you are charging, then could be a battery cell shorting out. These are the first things I'd check.

 

thanks for your time on the reply. the only way the headlights,tail lights and fan are connected is thru the battery? the positive post is disconected..., the bike still fires right up on the pull cord but nothing else is working as discribed. you think the battery could cause all these issues.

 

Why do you have the + post disconnected? You're not able to complete the circuit that charges back to the battery. You can start it without a battery because the ignition is magneto triggered(like a lawn mower) and the battery is mainly for the electrical components,lights,fan,awd, speedo,etc. All you're doing is just getting erratic voltage from the stator which won't allow the fan to operate along with in many cases light bulbs that can blow out because of spikes,plus you can cause damage to ignition system and other components.

 

i broke the stud off the battery trying to unscrew the bolt out of it but it was in tact when the electrical system stopped working in the trails i was gonna clean the connectors and it broke . im about to hook up a new battery to the bike what do you think would cause the fan and lights not to work if hooking a new battery up does not work.....thank you for the info

 

I'm assuming you have a 400? 500? (you didn't say) Once the battery is hooked just turn the key on and check the lights. If they don't work,then you've probably burnt a bulb. As far as the fan if you have an older model with the radiator sensor at the top of the radiator,you can pull the two wires and jump across these two wires with needle nose pliers with the key on. The fan should turn on. If not,you could have a faulty fan motor.On the later models with the enclosed fan you can pull the fan wire connections and apply 12 volts(from a good charger or jump to the battery) to the red/white wire and ground(brown) to see if the fan works. Plus make sure the fan blades are not caked with mud. If every thing works,just crank it up,leave the radiator cap off and see if the fan cycles on and off, then top off the coolant. Plus make sure you're charging at least 14 volts back to the battery while running,if you have a meter.

 

ok i hooked up a new battery and it didnt let the fan or lights run so i took a wire from the battery to the lights and they came on then i took the wire from the fan to the battery and it also came on its like the power isnt getting to them i dont want to direct wire them and put them on a toggle but i cant figure out this problem my bike is a polaris scrambler 500 4x4.....any ideas thanks

 

Then I would check the left control switch wiring and connectors that go down into the harness that wraps under the steering area up into the lights. Possible wiring short or left control switch contact problem. Also pull the connectors on the control switch and clean and use some dielectric grease on them. The engine has to warm up to operating temp before the fan can come on. Since the fan works hooking up direct,if it doesn't kick on after warming up the main problem(normally) is the radiator temp sensor. What year model Scrambler 500 if you can be more specific??