There is a diode that plugs into the gray wire that goes to the reverse switch. If you find the diode and unplug it, the reverse light should go out. The gray wire comes from the CDI unit, goes through the diode and to the reverse switch. If unplugging the diode turns the light off and you get spark, get a new diode. If the light does not go off, you have a short in the wiring between the CDI unit and ground or a defective reverse switch. If this doesn't help, you might have to take it to a dealer as the wiring gets complicated. You might have a defective alarm unit. Good luck
Sometimes yes, sometimes no. It usually plugs into a socket. The Honda schematic for a 1993 TRX300FW shows the diode located in or on the junction box possibly located under the fuel tank. PM me with your email address and I can send you pictures of the Honda parts breakdowns.
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