MyChron 5 Power Block off kit

MyChron 5 Power Block off kit. This will allow you to run the tach just off an external battery and not the tach battery.

You may ask why, well it is much easier to charge a cordless drill battery that's on the car than the removing the tach battery and charging it. Most Jr Dragsters have an external battery now a days powering other options.

1-External Power Cable

1-Battery block off

For the MyChron 5

Kit