Started looking at the electrical system.
(Warning, rant coming on!)
Like so much of what I work on, whether it be vehicles, tractors, guns, antique toys, or whatever,
seems like I never get to work on anything that some know-nothing taterhaid hasn't butchered up.
Stuff like this would be 1000% easier if those who know nothing would just keep their bumbling, greasy little rat paws off of everything. Something doesn't work? OK, pull the fuse, unplug it from the wiring harness. DON'T cut the wires, hack sections out of the wiring harness; don't remove relays because you are not bright enough to understand them, and old electrical tape is not the cure for every problem in the universe.
(rant off)
PO start/run procedure:
Set manual throttle about 1/4 to 1/3.
Turn the key on.
(fuel pump, batt warn light, low oil pressure warn light, green flashing light on HR meter comes on)
Push glow plug button for 5 sec
(no indicator for glow, but above lights dim)
Turn key to start position, engine cranks & fires.
Switch key to off position & remove.
(so that elec fuel pump doesn't run all the time, engine runs fine without pump on)
Couple of inherent problems with this method.
Once you switch the key off, HR meter, batt warn light, low oil pressure warn light, all cease to work.
So now I have no idea how many hours are on it.
The last 4 times I started it, I have the fuel pump disconnected; starts & runs fine, will monitor.
Maybe if you run it out of fuel you need the pump?
So, after a little rework & cleanup, HR meter, batt warn light, low oil pressure warn light all work as they should. Glow plug indicator light lights when glow plugs are activated.
As soon as I find rocker switches that fit the panel, OH work lights will function.
Maybe I will put the fuel pump on a rocker switch.
Horn was found to be dead, but switch, relay, fuse, and wiring all check out, so that will be an easy fix. Might even have a horn at the cabin.
Fuel gauge appears extinct, sender still intact, but not checked for function.
Rocker switch (dead) is for OH work lights.
Other holes are for Boom work light switch. (light works, wiring is a disaster)
I believe third switch hole was for wipers when cab with installed.