I have problems with my 04 Honda Fourtrax Foreman 450ES (TRX450FE) Display/Meter

The display only shows KPH, not MPH. I cannot get it to switch back. I have both manuals and cannot find any reference there or online. Help....

My second problem is the Meter/Display itself. It does not show which gear I am in, when I purchased the ATV used it had no problems. But this has come up lately. I do admit that the ATV was "power washed" including the case holding the display. Possible water based short? Best to pay for a new display unit? Worth the $200+? Help......

That is it for now....just have to pull the front frame from a minor bump with a tree, and then realign the plastic.