I bought the bits I thought were necessary to fit a temperature gauge to my 1985 K100RS, but when I began to install the instrument on my bike, I discovered there was no obvious mate for the green wiring connector on the gauge. Apparently there is a revised wiring harness on the later K100RS bikes that actually makes it a plug 'n' play deal. I can foresee me quickly getting in over my head if I try to be a pioneer in making this retrofit. Surely there is a DIY write-up somewhere that will guide me through this installation. Can someone point me in the right direction here? TIA