Dual console help

I have a 2006 2520 Parker with twin yamaha 150s. The boat has dual helm/consoles and the system is TechMarine which went out of business. I have a problem switching from one helm to the other which may be as simple as a bad neutral safety switch but I reeelly can’t figure out how to check it or fix it. Anybody got a suggestion who to call around here? I take the engines to Seels on 17 for maintenance. Thanks

try jeff seacrest
i ccant find his number, maybe someone else has it??

www.teamcharlestonmarine.com
www.joinrfa.org