This throttle is set up for E-Start paramotors. The strap can be set up for both left and right handed use but switched later - See instructions tab on this site.
The 4-Wire setup will have the kill switch and E-Start switch wired independently. This setup will have 4 wires coming out through the cable sleeve; two red (kill) and two green (E-Start).
Scroll through pictures to see the wiring diagrams.
ES-4W-51 E-Start, 4 Wire, 51"/130cm
ES-4W-48 E-Start, 4 Wire, 48" / 122cm