What kind of power do I need?

It is safe to say that you don’t want to supply power to your electric choke at all times. It would also be mostly undesirable to have your power windows work without your key in the ignition.

Most aftermarket add-on items require a specific type of power in order to function, and it’s important to make sure you’re supplying voltage at the correct time(s) to make sure your electrical system is gremlin-free.

Wording may change slightly with each manufacturer, but the basics will remain the same:

Battery – This is a constant 12 volt feed, used for things like radio memory, clocks and keeping ECU memory alive when your car is parked.

Ignition/Keyed – Fuel pumps, power tops or windows; any item you want to function when the car is running, but does not require voltage when the vehicle is not running.

Accessory – Most modern ignition switches include an accessory position. This one is useful if you want to listen to your radio (or anything else) without actually starting your car, but also need a hot circuit while driving.

Our Classic Updates make this type of add-on easy with a built in 6-way accessory plug:

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The power pigtail is pre-wired into every kit, and comes with the mating connector and terminals. Each circuit is fused, and our instructions identify the type of power supplied by each wire.

It’s amazing how many possibilities become available with six more circuits!