Wingnut,

A 1954 accessory installation manual would have instructions for the Chevy 2-speed electric wiper mechanism (that should also work for an aftermarket wiper mechanism). Check the vendor links. A 1954 wiring diagram (booklet) is also available from most vendors.

There are a few places where you can connect a hot lead - at the ignition switch or at the rear of the light switch are two options. Run a hot lead to the wiper's on/off/control switch. A lead should go from the control switch to the wiper. The switch is grounded when attached to the cab. How many leads on your wiper? I do not remember how many leads are on the original accessory wiper (I will check tonight).

I trust others will will correct me and/or add suggestions. Also, I do not know about the need for an in-line fuse.

Tim