150cc 3-wire Ignition Switch Pinout (Crossfire 150 and 150R)

 
Travis @ Buggy Depot

Travis @ Buggy Depot

Founder of Buggy Depot and NanoEFI. Certified buggy nut, riding enthusiast and GY6 mad scientist. Contributor to the sport since 2002. Member #7 on BuggyNews Forums, and hosts the Yerfer.net and GX150 Yahoo Group archives.
Travis @ Buggy Depot

A helpful pinout for owners of karts and ATV’s with 3-wire screw terminal switches.

If you don’t have a Crossfire model, the function of each pin is listed below so you can figure out which wire goes where.

If you find this information helpful, consider leaving a comment to help others when you figure yours out, with the name of your make/model and color coding on your vehicle’s switch.

Crossfire 150 and 150R Switch Pin-out

I.Black
II.Green
III.Yellow with Green Stripe

Functions of each pin

I.   CDI Pin #4
II.  Ground
III. Starter Relay (Solenoid)

Switch position function

OFF :: I and II open internally, interrupting CDI ground.
ON :: I and II close internally, allowing CDI ground.
START :: I and II remain closed. III and II close, allowing starter solenoid ground.

4 thoughts on “150cc 3-wire Ignition Switch Pinout (Crossfire 150 and 150R)

  1. Scotty Barton

    Where does the White, green and red wires go on the ignition switch? no markings on the switch.

    • Travis @ Buggy Depot Buggy Depot

      You’ll need to use a multimeter and the information in the article above to determine the function of your white, green and red wires. Then once you know, connect according to the switch pinout above.

  2. Scotty Barton

    OFF no reading on any of the prongs.
    ON Reading on I and II no reading on II
    Start reading on I and II reading on I and III and reading on II and three so don’t know with is I and II?

    • Travis @ Buggy Depot Buggy Depot

      It sounds like you’re trying to figure out the switch itself, all of that information on the switch pins is in the article above. You only need to check the three wires on your harness to figure out which of your wires match the switch pinouts as listed in the article above.

Leave a Reply

Your email address will not be published. Required fields are marked *