If I put a Honda trx 300ex motor on a 400ex frame how can I use the 400 ex wire harness it won't spark

SOURCE: honda atv wiring

you need a starter box w/c includes push swtich , install near the handle put attachement to bolt , wiring to starter red in color to box terminal, black wire connect to box terminal direct battery , install fuse depend to the starter amphere , series to black line positive + .connect green wire to the negative -- from battery to body of the strater or ground bolt. then start it. Thanks

SOURCE: 2007 honda trx 250 ex needed battery replaced it

Find the main fuse and check it. It's either got a corroded connection or it is 'blown'. If the fuse turns out to be okay - then check for battery voltage at the fuse (between the fuse and the chassis) with the key turned on. No voltage at the fuse means you've got a faulty ignition switch, a bad harness ground connection - or other harness connection(s) that are corroded or unpluged.

SOURCE: when I push the starter button the solenoid

Just because it's new, doesn't mean it works.
This is why cars get recalled.

The iron-clan test of a non-working solenoid is to cross the relay terminals. If you do and it starts.. it's bad.

Take it back. you purchased a dud. It happens.

SOURCE: blower motor 1991 honda accord ex

the blower motor is located behind and under the glove box. its held to the blower housing by three screws. remove the three screws and the motor will slide down and towards you. to test the motor. apply power to the yelllow/black wire and ground to the blue/red wire. the motor should run. if not you prob have a faulty power resistor.

SOURCE: 1985 Honda trx 125 no power at coil wires & no

I have a 85 trx 125 it ran great, parked it then the kids went to start it and it wouldn't start. I checked for spark, has it but seems weak to me, changed plug and still same problem. Any ideas? Coil?