Cool little batt charger , ss !
The electrics look a bit scary & do need some cleaning (even just a dust-off with compressed air would help) .
As a word to the wise - I'd be 100% certain to 'drain' that big capacitor (by grounding it , when the unit is NOT 'plugged in') every time after it has been 'plugged in'/powered up' , prior to messing with/touching/cleaning the interior of your item !
I'd first test all circuits with no power (120vac) , to be certain that they have not been grounded/shorted out !
I'll comment that it might just be an item that a Ford fan would like to have , esp if it's a working unit !
Dust & excessive 'funk' are not desirable , when it comes to electric items & will affect it's 'resale' value , IMO .