On a more serious note, I had a problem with this on the track.
The light would be working fine, then after a few laps it would just stop working and show all bizarre lights so unplugged it for the day. The next day it started working fine again and again halfway through my session, freaking out.
So I think maybe the RPM wire is getting hot and making it freak out.
I have some thin aluminum tape. Will that actually make a difference, or do I need something thicker?