Anybody have a thumbwarmer just quit, or is it fused?

[jgustman]

I checked the small fuse box by the brake rotor, no fuses blown, thumbwarmer just quit. 4,000 miles. Just order a new one?

 

[jgustman]

Well, I need somone with electrical knowledge to help me out here. I pulled the wiring, checked voltage with key on, kill switch up and there is 12.06 volts getting to the thumb warmer. Still no heat, bars are good. I assume the thumb warmer is burned out then, and just order a new one?

 

[steiner]

Are you getting a code 82?

 

[TBay Sledhead]

Check the resistance of the thumb warmer, if the circuit is open then it needs to be replaced.

 

[jgustman]

no codes showing. I read the service manual about driving the warmer in the diagnostic mode, but looks a bit confusing.

 

[Srxspec]

If you have an Ohm meter, check the resistance. It should be about 40 ohms.

 

[jgustman]

check it where, right behind the warmer where I checked voltage? Does the warmer setting change the ohm reading and does it have to be running? It had 13+ volts running.

 

[Frozenstiff]

Disconnect the plug on the wires going to the thumb warmer. Put the meter on the ohms, resistance scale, and touch the 2 wires going to the thumb warmer with the 2 leads from your meter. Like Allen says, it should read around 40 ohms resistance. What you were reading is the power going to the warmer, so that tells you that there aren,t any blown fuses. If you don,t get any reading, the thumb warmer has an open circuit, and will have to be replaced. Hope this helps.

 

[jgustman]

Just tested ohm resistance and it is 125 ohms at around 40 degrees, I see the specs in the service manual is 37-45 ohms at 68 degrees. I assume it's bad, but I thought there would be no ohms reading if it were bad? Sorry, not a electrical guy, but am I correct if it's that far out of spec it must be bad. Here's the conundrum...The hand grips are suppose to measure 1.53-1.87 ohms, but they measure 7.8 ohms and work just fine...I read up on how ohms are affected by temps, and there should be less resistance with colder temps, so my readings should have been less than spec, not more.

 

[steiner]

Your grips should measure out around 6.3k ohms at room temp

 

[jgustman]

Your grips should measure out around 6.3k ohms at room temp

Then the specs in the manual are wrong?

 

[steiner]

Your grips should measure out around 6.3k ohms at room temp

Then the specs in the manual are wrong?

The two sets (four grip heaters) that I have measured were all at 6.3k ohms .

 

[jgustman]

Wonder where they come up with 1.5-1.8 ohms resistance in the spec. So does your thumbwarmer measure in the 40 range like it's suppose to? Or anybody else measure theirs?

 

[smacho]

thottle habits and use of the brake effect the performance of the warmer(s). Find a location where you can hold RPMs @ 5-6+K (non-stop) for 5 minutes (without touching the brake), and see if it just starts working again ...

Just a guess --- based on how mine acts

 

[jgustman]

After doing some self teaching of ohms and what a open circuit means via the internet, I hava a "open circuit" by definition in which you get a very high ohm resistance reading. That means the electricity has more resistance "example: break in the wiring" than it can overcome to complete the circuit. Therefore not enough electricity to make the thumb warmer... warm up....Hope that explanation helps others if they have never tested ohm's before. Learned something new today...