I want to add delay wipers to ky 78 Fury. It is currently a standard 2-speed setup. Is there more to it than the switch assembly? Or is it all contained in the switch?

Do you have a factory shop manual for your '78? It's been a long time now, but I'm pretty sure my '78 Magnum had factory delay wipers.

I'd check to make sure, but I believe all you need is the correct motor, wiper switch and a delay box. All the wiring is there, if I remember correctly.

I have a switch I believe, not sure if I have a extra control box or not.

I beleive jc whitney still sells these they were like under 20 bucks i think,

Yes but I believe they are only for non-parking wipers. If when you flick your switch off, if your wipers park below their normal wiping sweet, I don't think those kits work. I am going to be attempting to retrofit in a delay wiper setup out of an aspen into my car, however the wipers won't have a separate park position so I will have to account for that.