The proper way to connect a second starter wire depends with the configuration used.
If wired correctly the red wire will be hot, but any wire can be hot regardless of colour if done incorrectly.
You can hot wire a boat. It just matters what type it is.
The white is neutral. The house does have a neutral wire even though it may be black. One of those black wires is the neutral and the other is the hot wire. You will have to determine which is hot and which is neutral. You can easily do this with a voltage tester. The wire that lights the tester is the hot. When you wire the light simply wire the hot to hot, and the white and green to the other wire.
No, there are different occasions when the red of a three wire cable gets used as a hot wire. There also times when the white wire gets used as a hot but has to be re identified as a hot with marking tape. When wiring baseboard heaters the cable used is red and black with no white wire in the set.
the hot wire goes to the starter and the ground wire bolts to the engine block.
Jumper wire from Battery + to Coil+Jump starter solenoid from smaller trigger terminal to starter side
Take a jumper wire from Battery + to coil +Then jump solenoid on starter
Run a toggle switch from battery to ign. side of ign. switch.
wire direct from + side battery to + side coil and jump starter solenoid
A wire that is getting hot could be shorted to ground.
Follow the "red" hot wire from the battery and u always find the starter.
If the red wire is a smaller wire to the starter motor, then its a faulty ignition switch. If its the large wire to the starter, then its meant to be live all the time. hope this helps
Check starter hot wire with test light. If hot & won't turn, there you go.
I've never wired a harley starter but I've wired most everything else and they have been pretty much the same. You will have a large lug on the solenoid for the positive battery connection. There will also be a small connection for the start signal from the ignition switch. It is hot only when the switch is in the start position. There may or may not be a ground connection. I've seen it either way. If it fails to start, ground the starter case to the frame. That should pretty much do it.
Its located on the outside of the wheel well, behind the oil bag... a wire runs from your starter directly to the relay, which is a small inch squared black box.
Remove the starter. the solenoid is mounted on the starter.