well i went around to look @ the polaris site.
says the front headlights consume 30W each(well it says 30/30 so maybe its 60W for high????), plus tail light 8.26 (lets say 9)
and the brake light is 26.9W
that adds up to 106W usage @ idle maybe even 166W...PLUS the stator...
i dont know how many W the 2002 400 outputs but id guess around 175-200-250W @idle..
should be around there...
so... if its 175 you have a 9W reserve, if its at 200 then you have a 34W reserve... im almost 90% sure it wont go as high as 250W... maybe someone more informed on this would help... (or have 69 W @ 175 and 96W@ 200, but i find this unimportant yet..)
IN
ANY case, keeping the W's down is a
GOOD thing to do...
as you have about 9-34W left, its kinda on the limit.. it means your going to have to turn all those headlights off before you start it...
dont forget. at those numbers all those wires will also become warm/hot after some time.. so properly isolate them...
as far as headlights going, i would substitute the rear brake light with a LED light, its going to save you up to 26W!
as far as adding LEDS vs halogen... well.. i prefer leds... less power consumption and they dont heat up as much..
i would recomend you add something like 2 "lights" each 5 W... with halogen well... your going to go as far as a nigt light...
or leds seems to be a better option...
NOW... you do have a higher output at higher RPMS, but overloading the system could cause it to die out when stopping.. (unless you want to constantly turn on and off the lights, which would kill them sooner)
and i DO realise that you DONT always run with HI beams
so assuming you want more light... im guessing you are going to run HI beams AND the lights... so it leaves you with barely anything (9 to 34W)
and going with LOW beams leaves you 69-96W, but like i said... you probably want to light the road... and i uess theres NOTHING better than headlights for doing so..
as far as your options are... id get brighter/more efficient halogens for your lightbulbs on you headlights...
UNLESS you want directional light (lighting the sides) then you wont really NEED the extra lights...
sorry if my ideas are out of track.. got distracted far too many times...
bottom line...
IF you are going to install the lights, go for LEDS, and change out the rear brake light for a LED.
before you buy some fancy lights or something, i strongly recomend getting a good pair or lightbulbs for your quad...
maybe they will solve the problem...
if you want light on the sides of the atv, get lights, if for the front, they wont help much...
although... adding a led strip that doesnt light up the road but lights up the vehicle (like an audi) would be a good idea on saving energy...
ending up with a dead battery in the forest isnt fun.
but if you go and buy some high consuming halogens... throw in an extra battery on your atv..
another idea would be to get a projector, that has its own battery and use it instead... and you can charge it while riding... (with some smart chargers it wont consume any energy @ idle and will when the output increases...(aka rpm are given)
hope i helped...
i cant help you out by MUCH as i dont know the output of your atv..
nor can i help you much because i dont know why/for what reason/application you are going to use your lights for...
edit: sorry for the long post