Back to the wiring jungle 🙂
After the success of getting the engine running
the rest of the wiring needs to be completed. The headlight wiring was first on
the list. We have decided to use the light switch from our donor. The switch
works very well and has a dimmer function for the dash & instruments
lights that we want to incorporate into our Sportster.
For the light switch testing a front light was
mounted on the car, this made the testing much easier as the results were
instantly visible and no need to hold a multimeter up to each connection.
As with the rest of the wiring the first part was to study the BMW wiring
diagrams. It became clear that the wiring diagrams did not match the wiring
from our donor. So to start with the diagrams were put to one side and the
wiring from donor was used as a guide to wire the light switch. The result was
that lights did not function correctly, when the light switch was moved to
position 1 the low beam came on, this should only be the parking light. Low
beam should only come on at position 2.
With all of the confusion the multimeter came out and the switch was analysed,
with the help of the wiring diagrams the switch was successfully wired. The
light switch functions just like in the original car.
We will also wire up the spot lights to the high beam. Originally we planned to
used the spot lights as front fog lights however in this part of the country
front fog lights get very little use. With the spot lights on high beam
will give us more light for driving in the dark (and help to blind rude drivers
🙂 )
Light Off
Parking Light
Low Beam
High Beam & Flasher
Max showing us how headlights are supposed to work! 🙂 click image for a larger version.
