he did.. he said he tested it with the OEM one..have you been able to test the tail light of the grom?
No running light or anything just dead. Plugged stock tail back in and works perfect. Maybe the board in the tail light went bad? I'll keep y'all updated on what steady garage says
ahh gotcha..meant test "off" the grom as using a completely different source of power. electronics can be weird sometimes, best way to test is to isolate as best as possible.