fan controller question

Seach on the H.A.M.B website. Most rodders running the Ford 2-spd fan use 2 or 3 mechanical relays. One guy sells a setup on ebay, I recall.

But if you really want solid-state control, I bought a fan relay ($25) for my 96 Voyager to possibly use on one of my A's. If not, it is just a spare part. Don't recall the rating, but it runs 2 fans so is probably at least 60 A rated. It needs a good heat sink and is riveted to the front bumper on minivans. I think it is a simple on-off transistor (not PWM). As I recall, one fan wire gets +12 V and the SSR shorts the other wire to gnd to run the fan. Similarly, on the input side, the engine computer shorts the control wire to turn it on. You can find a Voyager wiring diagram online to copy.