This kit allows you to meet NHRA safety guidelines when a battery cutoff switch is required. The kit is based around a 200amp continuous duty electronic solenoid that has been thoroughly track tested and can handle tire shake and vibration without coming unlatched.
Installation on the kit is much easier than a typical battery cutoff switch. The solenoid is generally mounted close to the battery. You have 4 poles on the solenoid, 2 big and 2 small. It acts just like a big relay. One of the big poles goes to the battery positive and one goes to the rest of the car. You're essentially just putting this solenoid inline on your regular power cable coming from the battery. You need to make sure your alternator output wire is going directly to the battery now as it will keep the car running when the solenoid is turned off otherwise. The small posts are your switched power and ground. You'll send a constant 12v power source to one post and a switched ground to the other post. It doesn't matter which source goes to which post on the small posts, just that one is 12v and one is ground. When 12v and ground are applied, the two big posts are connected. Your switched ground wire will run from the small post to the rear of the car, to one pole of the switch. The other pole of the switch will be wired to a chassis ground in the rear of the car.
Drill a 1/2" hole in the rear bumper and mount the switch and switch cover.
Turn the switch on and start the car. Turn the switch off and if the car dies you've done it correctly.
