I am looking for a suitable cable for my conversion. Car: W123 240D Jg.1983 Engine number 616… Delivery without tachometer, only watch As much as I can, I have the correct thrashing meter (diesel/ 6000) and also the diagnostic connector with holder and the cable for OT to the diagonal connector. My tachometer is a 2-pin/pole, but according to the instructions I have, I need the 2-pin with more cable ends like only 2. Can someone tell me where to buy the correct cable or how to buy it? I am grateful for any constructive tips I also have questions about the manual, how do I have to understand the connection to the cable after the fuse no.12, I have to solve the main safety box and screw the cable from the bottom to no.12? Thank you for your help.