The correct winch mount for your 2002 Honda TRX 350 is Bulldog Winch Custom-Fit Mount # BDW15107. The first mount you mentioned was a fit but discontinued by Superwinch. The second was a fit for the Polaris brand frames and not a Honda frame but it too has been discontinued. Rest assured that many winch brands will work with this Bulldog custom winch mount that is a confirmed fit for your Honda TRX 350 frame.
I also linked a FAQ article on how to wire an electric winch. view full answer...
The mounting panels for the Bulldog # BDW20261 rocker switch are designed so that they can be used individually or ganged up one next to the other. Since you're installing a single switch, use # BDW20265. If you were mounting several together, one next to the other, you'l use # BDW20264 on the ends and # BDW20263 in the center. view full answer...