electrical problems

Just picked up a 2007 honda rancher 400 trx with es. I noticed the left headlight was out when I bought it so I bought some new leds to brighten things up a bit. When I switch on the lights,only the right headlights illuminates and when I switch to brights only the left headlight illuminates. I...

I have a 1986 125 fourtrax and i cant get a spark. i dont know what to test and how. and i dont want to blindly replace things because its to expensive

hello i have a 1986 honda fourtrax. I am no getting any spark to the spark plug, but im not sure how to check and what. and i dont want to blindly replace parts...to expensive.