Two wires from the stator, should be yellow/red stripe, under the flywheel, go to the rectifier.
The tach wire is/should be, a grey one and it connects to one of the yellow/red stator wires on terminals on the rectifier, a red wire comes from the ignition switch to the third terminal, marked + , on the rectifier. It is spliced within the harness with the "exciter" wire to the starter solenoid.
The choke wire comes from the ignition switch to the choke solenoid it self.
Probably in your replacement remote control the kill circuit will be black/yellow stripe, it connects to the switch-box. The terminal on the switch-box will have the colour code marked on it.
Reading your post, I gather the harness has been mutilated by a previous owner. That being the case, I would suggest a replacement engine side harness which would be plug and go. Pic would greatly help as we could have a look at what you have.
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