Spent several hours untaping and labelling all the wiring. Generally the loom is in good shape, but dirty and with some overspray in places. I did find that the wiring to the coil had melted in the past and part of it had been patched by a PO. For some reason I found this job quite rewarding. Maybe because I find wiring diagrams a bit confusing sometimes and it takes forever to trace things. I now feel confident to pull the loom out when it's time, clean it, and make a few upgrades before putting it back in.
Engine bay wiring
Dash wiring (looked better before I untaped it
)
While doing this job, I was reminded of an issue I had when first trying to start the moke after it sat outside for 4 years. It turned over well but failed to start. Spark was very poor. I cleaned and reset the points, replaced the condensor, tested the coil, tested the spark plug leads, etc. Still the same. I then looked at the wiring coming in and out of the solenoid and it looked nothing like the photos I found online. Some PO had disconnected all the brown wires going to the solenoid and connected them to two thick blue wires. I traced these back to the dash and found them connected to the ammeter I installed 20 years ago shortly after I got the moke! Haha...turns out the PO was me!
The ammeter will be replaced by a volt meter in this build for wiring safety reasons.
After running out of ideas regarding the poor spark, I got out the manual and wiring diagram and could see that the coil circuit was fed through the ignition switch. Pulled the switch apart and found it badly rusted inside. In addition, one of the small springs in the switch had corroded away almost completely. Replaced the switch with a spare and the spark improved significantly. I have since realised that the spring is the same as those in the later indicator stalk mechanism, of which I have an old broken one, so I can always clean up and repair the rusted ignition switch if needed for another project.