Hi all. Been a while been cracking on with the 1999 P38 gems 4.0 - was pretty sure the MAF was dead so got a new one. Just plugged it in and got 0 lb/s - is the wiring dead? Same on old and new sensor. All other readouts are good. Usual MAF issues like misfire under heavy load and grumbly idle etc.

Secondly just behind the battery I found a connector that looks like a mini bulb holder. Any ideas?