Assembly of throttle flap pots

Hello, people, after I have gelsesen in some posts about the speed and going out at the traffic lights etc., I looked at the throttle flap poti today. I noticed that the insulation of the cables is porous. I wanted to dismantle it now and re-isolate it. Now I read something of: clamp the battery, drive in at 4000 tours (after installation) etc. Does anyone have any idea about this?? Can you just unscrew it or how? Thanks already.