Tim C

I don't know if this belongs here or in DIY-PROM so if I've got it in the wrong place could a mod move it for me?

I've got a 78 Ford F150 rockcrawler with a 351M and a 4 speed. I've been running TBI on it for a few years with the 7747 ecm. The 7747 is dialed in pretty good for the stock rebuilt engine but I'm wanting to switch to the 7427 pcm and run the $0d MAF bin that Demented24x7 posted up on this board cause I'm planning a head and cam swap soon.

IF anyone has done this swap I've got a few questions. First on TunerPro it shows a high and low speed fan output in the scalars but I've only found mention of the fan control going to pin E1. Is that the only fan output or have I missed the other one?

The other question is about the VSS moving to pins F2 and F3. I've only got one VSS wire with the 7747 coming from a 8000 pulse per mile ford VSS through a 4 out buffer with a divide by two circuit piggybacked so It sends out 2000 ppm to the ecm. The MAF signal goes to F12 so the VSS was moved to F2 and F3 from what Ive read. To which pin do I hook my VSS signal? From what I can tell F12 was the 40 pulse transmission output signal and F13 was a 2000 pulse per mile from the DRAC so I'm confused.