Has anyone installed a horn kit on their uforce 1000xl. Purchased a kemimoto plug and play horn kit and cannot figure out where to connect it to any ports in the machine. Any suggestions?

1000XL - 71 miles on it: Had clutch kit installed at dealer last week, rode about 10 miles and code U007388 started flashing on dash. Code disappeared, then so did my temp and RPM gauge. Check engine light then came on. I drove it back dealer, they looked at it the next moring and check engine light was off and gauges all worked. I picked it up and drove about 3 miles and started getting code again. Engine light has remained on even after shutting it down over night. Taking back to dealer later this week.  Any suggestions on what problem could be?
Thanks