Not sure if this is the right place to put this, but I have open wires by the ECU. Not sure what they are for, but my speedometer and odometer don't work. They light up tho. My PFC doesn't read speed either, and yes I checked the sensors on the transmission. I tried to ground the open end, and when i started the car back up the PFC was blank. I got scared and decided to post pictures; make sure to check the picture captions.

http://pdx.facebook.com/album.php?ai...07&id=42002323

 

I think the black connector is for your E/L unit. It controls boost the idle under a heavy electrical load. My speedo and odometer is also not working... The E/L unit is in there somewhere, it's a black box a little smaller than a pack of cigs.

 

Did you ever figure this out?