Charge volts

My service manual says to check the seperate output wires with meter set to ac volts. This shows to be weak,but when you test dc volts at 2000 rpm with h light on its 15 volts. Bike is an 82 KZ 1100 D1 SPECTRE. I'm
wondering if this related to ocasionaly burnning the 30 a main fuse? Battery is going on 2yrs.Seems get better with new battery.

If you're testing the dc voltage across the battery and you're getting >14.5 volts than you've got reg/rect issues. However, if you're stator isn't putting out enough juice then you may have even bigger trouble. I'm no expert on motorcycle electrics, however, the Suzuki GS line had a weak regulator and when it went south the stator would overheat and would fail too. You may have both problems. This is why the new battery helps. Test the resistances on the stator and see what shows up.

Sam

outatimeoutlaw wrote:

My service manual says to check the seperate output wires with meter set to ac volts. This shows to be weak,but when you test dc volts at 2000 rpm with h light on its 15 volts. Bike is an 82 KZ 1100 D1 SPECTRE. I'm
wondering if this related to ocasionaly burnning the 30 a main fuse? Battery is going on 2yrs.Seems get better with new battery.

15 volts is a little high. It can be the regulator, or the circuits feeding the brown wire to the regulator or possibly the ground.

When the fuse connections get dirty, that can cause the voltage on the brown wire to be low so the regulator increases the voltage to the battery to compensate.

The dirt on the fuse connections will also cause the fuses to burn. They don't blow from over-current, but they heat up and melt due to the dirt on the connections. Replace the fuses and clean the fuse holders and see if that makes a difference.

What AC voltage did you find coming off each of the stator wire tests?