If anyone is looking to repair the wiring harness themselves we offer all of the connectors.
I do run a full diagnostic on the complete electrical system for $10. Then repair/ replace as necessary.
All of the information above is very good. In 80% of the systems I test there is a broken wire somewhere. Find the break is the PITA but then can fix and system is good to go. This is on Power Pack and Digital-K systems.
I am always available via phone 888-KARTING to help your issues.