Here is a nice reproduction Combination switch, replaces OE units on Honda ATC250R 85-86 but can also work on just about any ATC model.
Has Light on/off, Hi/Lo Beam and engine stop function. A great replacement at a fraction of the cost.
Has 4 pin white plug, bullet terminal single plug and 3 pin headlight plug.
Note, some wiring mods may be required. Note: image shown not correct for this item, does not show headlight plug which is included.