I bought a old 1989 TRX 350 4x4, this atv has a row of about 10 leds on the right fender, when you crank
it up it goes from one light to all lite up usually. I had a old 1986 TRX350 that did not have the leds so Im not sure if this is a stock item or a add on. Does anyone know what these leds are for? Also does anyone have a service manual they want to sell.

 

it sounds like a RPM gauge...rev it up and then let off the gas and see if the lights go with the throttle