I bought a BMW R1100GS from relatives for 300€, it stood around for 4 years. After changing the petrol pump and filter it also jumped again. Now to my problem, the BMW was converted into a Scrambler, that is, it has no disguise anymore and a few other things, among others a new Tacho was installed, which only has the necessary control lamps, a km/h indicator and mileage. I would also like to have the oil temperature and engine speed However, the electronics were not properly wired and since I have found nothing online so far I wanted to know if someone might know which contact is responsible for the gray plug (in the middle below).