Kind Regards, Gary in the UK
A: We would not suggest going about it as you mentioned. There are other areas to inspect/test before attempting something so drastic. First, see I’d you can pull up any stored diagnostic trouble codes from your speedo head. You may have a failing crank position sensor, cam position sensor, a bad coil, bad TSSM (turn signal security module. Hopefully not a bad ECM. If your security module is bad. You will need to replace it. Do not attempt to eliminate it from your electrical system. The ECM will still need to detect that a correctly functioning security module is present.
I have a 2011 ultra classic when the temp outside is hot and the bike gets heated up the speedo and cruse will quit. when it cools down a little it works again any hints.
A: Check your speedo head for stored diagnostic trouble codes. A stored code might steer you in the right direction.
Troubleshoot with Harley Error Codes