i am all around very disappointed in the honda light bar. especially with its lack of adjustment. i notice my switch getting hot and will replace it asap with a similar after-market type with higher quality. also, i believe a toggle may work better.
If it were me I would get this switch from Trailtech ; http://www.trailtech.net/dc_conversion.htm & get some 18 gage wire & replace it all the way to the relay. The Honda switch is wired too light & the switch from Trailtech will carry more amps........ Rod
Don't know how long you've had the lightbar. Mine went bad went to dealer they informed me they had never heard of the switch going bad. They did however find a part number from Honda and replaced it under warranty.