hand warmers where to start?

[YamahaGuy-1]

96 vmax, hand warmers do not work? Where should I look first? open for ideas.

 

[snowdad4]

start by unplugging them and check each one for continuity, as well as the thumb warmer. no continuity, no worky. thats the easiest to rule out.

 

[YamahaGuy-1]

Thank you, that's where I'll start.