I used to run the Tom's electric wiper kit on my '68, I got really tired of it not being synchronized and couldn't justify spending $200 on the switch that sync's them up so I found a stock wiper setup on ebay for $60 that works perfect. You'll have to modify the linkage between the wipers since the 66-68 frames have the wipers in a different location. Also, look into doing the Cherokee wiper mod when you switch to electric, they fit tighter to the windshield than a stock Bronco wiper blader.