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Temp Gauge Regulator

4765 Views 8 Replies 6 Participants Last post by  Shep
Hey all,

I have had intermittent problems with my temp gauge going all the way to the red. I put an aftermarket gauge on it just to assure myself that it wasn't really getting hot - it wasn't. I just zip-tied the indicator part to the handlebars
, and I had to remove the heat shield below the coils, so I would like to get the original working again.

My question is, should I go through the wires to the regulator and look for a faulty ground, or just go ahead and order one from Marshall? If I order one from Marshall, is there a direct link like to an order form, or do I just email and request info?


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If you have a multimeter you can check the regulator and see if its working proprly. Pull the wire off the temp sensor in the therm housing and measure the voltage on this wire to a good ground. You should get 7V, if not check the ground for it. If the grounds look good, measure the voltage on the green ground for the reg, and if it is any higher than 0 then the reg is probabaly dieing.

There is a lot of info on this forum on how to make one, if not someone may have one they can sell you. Unfortunatly, Marshall passed away a little while ago which has saddened many as he was a great guy.
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