[RockBit]

Hey all, I need some help. I tried to start my car this morning and got nothing. I checked the battery voltage at 12.74V, and I keep a battery tender on it. This is a newish Optima red top. I’m confident the battery is good.

I have the trunk mounted battery set up. Next to the battery is a disconnect switch, which has the positive battery cable attached, From the other side of the switch the cable goes to the starter.

I checked voltage at the cable on the starter and get about half a volt. The only thing in between is the disconnect switch.

Is it possible the disconnect switch has gone bad? I use it quite a bit but have never had an issue before.