stupid question on my drz400sm

[*MeatballStunts*]

Tailight is dim because there is a poor connection somewhere most likely the ground. make sure the ground is a good clean connection to the frame. Also try tapping into the tailight ground close to the light and make a new one to see if it brightens up if that works you know thats your problem somewhere. make sure all your connections you plugged back in are correct also.