Join Date: Nov 2009
Location: Lander, Wyoming
I will take a guess that the ground terminal of your "charging port" is connected to a lighting wire on the KLR. When the key turns on, the connection becomes + or hot from both ends. In other words, it Looses its Ground to the battery.
The ground terminal needs to go directly to a bare frame ground or a Black/Yellow harness ground wire.
Modify at "YOUR OWN RISK"!
Still riding my 1987 KL650-A1. 85,000+ miles & counting