on a '95 xplorer 400 4x4,..heat warning light ant working,..bulbs good,..no volts to the light,...am i right in thinkin it should have volts an senser grounds it out to complete the circuit?? any ideas where i might be losing the volts??

 

Check the wire connection on the sensor located on rear of head.

 

connector an wire seems fine on senser on back of head...no voltage there ether tho

 

Sensor completes circuit, you might check wiring into harness and check that the ground wire(brown) on hot light is truly grounded.

 

gettin new light an senser tomorrow an gonna just check every dang connection on this bike du them up with dielectric grease an then seal them with silicon

 

If you have access to a heat gun, could focus heat on sensor and see if hot light comes on OR can use a torch,BUT remove tank and easy on the flame!!! OPT

 

think im gonna take senser off an put in a pot of water an check it with a ohm meter....gonna check the fan switch sending unit too!!

 

Fan sensors are bad about going out because located at top of radiator. If coolant gets low,below the sensor they will short out. Temp sensors on the head are pretty reliable,only replaced a couple caused I broke the sensor tips!! Don't remember having to actually replace a bad one? OPT

 

ether way i think im gonna figure out a heat gauge for it,...just feel better bout knowing how hot it is for sure!!

 

let us know if/when you get something figured out for a gauge.... I think I might be interested in something like that myself... Does anybody know how to ohm out the sending unit? would it be just closed to open(or vise versa) or is there a resistance range?