National Luna Dual Battery problem. Car won't start.

[adio3x]

Greetings.

Just finished up the national luna dual battery install, solenoid flashes green, monitor is reading 12.6 volts (all yellow lights in the center are lit), no alarms, but my car won't start. Electronics work, lights work, but the car won't crank. I've tried taking the negative terminal off and on a few times. Nothing. At this point I removed the kit, car started up after 2 attempts at cranking.

Thoughts?

 

[mikey's2010SR5]

My guess is there is a loose connection somewhere or a bad wire?

But I have no idea in reality.

 

[MasterBlaster]

The National Luna system does not modify the stock electrical system if installed properly. I would check over your electrical connections, mainly at the factory battery.