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Should sense wire of Honda R/R be grounded?

  • Thread starter Thread starter amontyg
  • Start date Start date
I have the sense wire attached to the orange wire right before the brake light switch. When the ignition is on and the bike is not running I get 12volts from this point to the positive battery terminal. If I disconnect the sense wire from the orange wire I get 12 volts from the orange wire to the negative battery terminal. Does this make sense? Should this point see a complete reversal in polarity when the sense wire is connected?

Just to be clear I have the green wire running right to the negative battery terminal. The red wire is connected to the original red lead for the original R/R. I have then run one of each of the three wires from the stator into one of the three yellow wires in the R/R. All connections have been soldered.
This is how I would recommend installing it. See my diagram on the sig line below at the end of the document.
 
Ok, I do see how my explanation could have been misinterpreted. In defense of the "audience" though I would hope that they would read the rest of a post before doing things to their bike. I thought that if I or we explained the reasons behind the suggestions then the readers could be benefited in the future. It was also for my own benefit, to verify my own knowledge and understanding. So, sorry amontyg for derailing your thread.

You might want to check out my thread on "installing a voltmeter" its somewhere on the front page, in there I posted a diagram of a relay. Sometimes, wherever you connect the sense wire is going to have a voltage that is lower than the actual battery voltage, because of resistance from corrosion. This is especially common on older bikes like ours. So the ideal place for a sense wire to be is on the positive battery terminal. However this would slowly drain the battery all the time, even when the bike is off. A relay is going to let the sense wire read directly from the positive terminal, without draining the battery. If you hook up a relay the right way, it will turn off current to the sense wire when the bike is off. PM me if you are interested in doing this. If your battery is being overcharged, then this would definitely help you.
 
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