When cranking, the ballast resistor is bypassed to give a hotter spark. If during cranking you do not have power at the coil, but when the key is turned to run you do; there is a problem with the bypass circuit (sometimes it comes from the starter motor solenoid wire)
coil is shorting out , replace the coil.
Primary wire comes from ignition key to hot side of coil.
Very literally, hot wire is a wire that is hot. Pertaining to vehicles, to hot wire a vehicle is to start the engine or motor of the vehicles without the use of the ignition.
You can check for an instruction sheet at the manufacturer's website, but most tachs have a black wire for ground, a red wire that is hot, a white wire that is hot, and a green wire that goes to the negative or tach terminal of the coil.
they get to hot/there is not enough cooling
a
Take a jumper wire from Battery + to coil +Then jump solenoid on starter
It is related to moving coil type instrument
Red is hot, black is not.
The coil temperature will rise a little when the engine is running, but if it's getting too hot that's generally an indication of damage to the coil or that the coil is wired improperly.
Check to see if your getting 9.5 volts to the coil hot wire if so, the coil is faulty due to broken windings internally.
wire direct from + side battery to + side coil and jump starter solenoid