Tach. Question

[spross86]

So I sent my tach/Boost gage out to Casper and just installed it! And it works great. So I go out last night Fishing and when I turn on my lights it kills the tach. Only but with the lights off no issue! Anybody got any ideas why?

 

[TurboDave]

Call Caspers.

 

[spross86]

Call Caspers.

I will on monday closed today.
Hoping somebody had same issue