Quote Originally Posted by spm97 View Post
Hey all,
Does anyone have a detailed pinout of the Fuse Box ? From what we can tell, fuses 1 thru 4 will get power once the engine is "started" (they do NOT have power with just the key on - something must "Enable" them). If anyone can tell me how they get powered, that would help.
The supply for fuses 1 thru 4 seems to be connected, which makes sense if it's the output from a relay. Which relay ?

Can someone please confirm with the key just in the "On" position, if you put a voltmeter between the wire that is common to all the injectors (i think it was a blue/gray color) and ground you have 0 volts.

We figured out the Fuse1 goes to the PDU harness pins 1,2,13, and one of the pins in the third connector (can't remember it's name).

It _Appears_ that Fuse 2 and Fuse 4 go to the larger connector with 4 wires (3 of the 4 pins on the outside have a heavier gauge wire, and one of the small center pins is used, and then there are a lot of unused small pins) that T's off the PDU harness right before the ECU. one of those 4 wires _Appears_ to be the +12V for the Coils, and one of those 4 wires _Appears_ to be the +12V for the Cam Solenoids, which I believe are fuse #2 and Fuse #4. Again, it someone could confirm that, it would be appreciated.

The remaining larger wire on that connector APPEARS to be the +12V for the injectors, but the weird thing is it is connected to the "Supply" side of Fuses 1-4. And we never found anything connected to the load side of Fuse #3 (at least before I left).

I think something is screwy with the +12V for the injectors. It makes no sense that (again - from the best I could tell) they are all connected to the Supply side of fuses 1 thru 4.

Anyway, that's my thoughts from the evening. Hopefully this helps give people ideas.

Sean
Not sure which one you're looking for but there are several pin outs at the end of this doc: https://performanceparts.ford.com/do...-6017-M50B.PDF