The bike has been sitting on the ramp at working height since before Christmas. We had visitors over the holiday period so I had no opportunity to send time on the bike. I did spend some time looking at it and pondering what to do next.
The temperature outside is about or below zero centigrade and has been for most of the past couple of weeks, so no allotmenting today. I got wrapped up and went out to the bike with the express intention of making a start on the the electrics. Whether it was the break from working on the bike or having sufficient time to muse on the problem of the wiring but I have had something of the break through. Often with difficult jobs it is finding a place to start. I found that start point.
The problem is that bike is an RT [BMW speak for Road Tourer] and I am to convert the bike to a naked [/7] version. I have a wiring diagram for a R100RT, I could not find one for the R80/7, which means the wiring diagram is not for the exact model and there is a good deal of difference between the two wiring schemes. The start point was to connect the wires to the ignition switch. The ignition switch on the RT is positioned in the centre of the fairing cockpit. On the /7 version it is in right hand pivot of the headlight. The ignition switch has right angled spade connectors. I salvaged the connectors when I had to pull the ignition cabled back into the head lamp shell. I trimmed back the over long ignition cable and soldered the connectors back on to the wires, rerouted the cable round head lamp shell to hook up the ignition switch. That done I turned my attention to the big cable hanging out of the bottom of the head lamp shell.
The cable had a multi-pin plug and relay. The relay was not shown on the wiring diagram, the plug was. I figured from the diagram that the plug was to connect the bike to the fairing for the indicators. The additional wires than the diagram suggested, together with the extra relay, that the relay was for a hazard warning set up. I figured I could do without the hazard warning flasher. With that decision I was able the figure out the wiring for the front indicators. I am now looking for some two pin connectors to make a neat job of the indicator wiring.
