You will get 12V at each of the outer terminals on the switch (when the grips are connected up) as there is only one element in the pad, it�s just effectively divided into two because the (red) ground is tapped in the middle. When you have the switch in H (white), the whole element will be at +12V, but the current will only flow round one side as far as the point where the ground wire is tapped in and run to earth (high resistance hot side). With the switch in L (blue) the current will only run through the other part of the element (low cold resistance side) up to the ground tap.
Quote:
Originally Posted by
stoic bloke
As you have a multi meter test the voltage drop to earth, as unless it's connected to the frame it may get resistance perhaps through the bearings if the earth is connected to the handlebars etc.
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Agree. The most likely reason for no heat is a bad earth connection, check that first, go back to �ve battery terminal if you can.
(You weren't tempted into testing them out before fitting them to the bars were you?? They burn out easily without a some sort of heat sink.)
It�s worth noting that the very latest Symtec pads have now got black as ground not red (more logical), although most places are still selling the older red ground kits from stock � a recipe for confusion in itself!
On the ones I had on the Ten I put 12V through the red ground wire (backwards) and wired blue and white to earth for maximum heat and used a waterproof two position switch instead of the one supplied. I did this as I had slow warm up/not enough heat (which I put down to the thick gel grips I had at the time). The Symtec's heat output seems to be very much linked to the variety of grips you use with them.