adding a tach to my non tach 68

[Ieatcamaros]

Thanks for the compliment. In reality, I think you'll be happier with your car by just turning the key and having everything wired up that way. But it is totally possible to do what you want to. I guess your planning on putting an electric water pump? All you have to do is run 12v wires from the battery to each accessory switch. You can use toggle switches. You will want to run your fuel pump, water pump, and fan (if you plan on running an electric fan) through relays. You can get 30 amp relays at the parts stores. They tell you on the back of the package which terminal is what. Use 15 or 20 amp toggle switches and use 12 gauge wire. You might survive with 14 but no smaller. Hope this sheds a little light for ya.

**Edit** There are other ways to do this. This is just one way of doing the job.