I used a Cole Hersee part # 2484-09. It is pictured on the Cole Hersee Web Page

Go to that page and click on Battery Realted Products then Battery Disconnect Switches for a picture and specs..

My GMC is positive ground so I ran a cable from the negative post to one leg of the switch, then from the other leg of the switch to the starter solenoid..

As I mentioned above, it is nice to dis-connect the power when the truck is sitting in the garage or at a show. It also makes wiring projects easier, flip the switch and you are sure all the power is off..

Bill M
53 GMC Hydra-Matic

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When you argue with a fool, two fools are arguing..