Grounding points question.

[ragtop69gs]

I seem to have a dirty ground somewhere, when I use the turn signals or brake light I can hear it in the radio and watch the dash lights dim a little. Other than the battery ground where are some of the other wiring harness ground points that may be the culprit?

[Flyinfool]

Do the dash lights dim when at speed or mostly at idle.

It is pretty normal for the turn signals to cause things to dim at low engine speeds where the charging system can not keep up, especially if you have any extra lights added to the signals.

 

To test, hook an analog volt meter across the battery and put on the turn signal You will most likely see the needle wiggling in time with the flashes. Now start the bike and try the same at idle, and again at 2500+ RPM. The needles moment and dimming lights should be close to gone at the higher RPM. If the needle is not moving when connected across the battery but the dash lights are still dimming with the flasher then you do have a bad connection somewhere, It could be in either the power or the ground side.