What was the performance ford ranchero 1978 ?

Didn't find 97 ranchero in US automotive database. Is this a US vehicle? I looked for wiring diagram? I'd have to check starter motor wiring circuits and make sure engine isn't trying to seize when it gets hot or starter motor.

images for 1997 ranchero 4.0l straight six engine

352 or 390

upper lower an heater core

Did you found a solution meanwhile to solve the problem with the wiper switch?

That should be the same as a Torino and maybe a 77 Thunderbird. You might try the library or search engines for a shop manual for those models.

Best way would be pickup a Haynes manual from a parts store it will walk you step by step

Made me laugh and reminisce. One time my dad bought a 1957 ford 2 door hardtop. I was about 14 years old, so just starting to drive. Driving that car was a real gas, but at any little bump, the rear end bottomed out and made a loud whump!
Find a wiring diagram from a repair manual for the number of speakers. Don't know what size, but wherever the speakers are located, the mounting hole and dimensions should help you figure it out. Also try googling ranchero. You might find an enthusiasts forum that you would like to join.

sorry if the resolution is poor.

Vacuum diagrams for a 1978 Ford F150 are included in this shop manual https://www.fordshopmanual.com/ford-truck-shop-manuals/1978-ford-truck-shop-manual-pdf-download/