Hi guys, I just uploaded a new video for how to replace a worn out air pump with a new unit. I bought this unit from Arnott. While their instructions are okay, they have you splice the power lines from the new pump into the pins that are already inserted into the harness, which is sort of hack-ish. Instead I purchased the correct de-pin tool from BMW to do the job right. The tool is made by TE, you can read about it
here.
The part number for the pin is: 61130007572. It's known as a
circular contact made by AMP / TE.
BMW E53 X5 Air Suspension Pump Replacement DIY - YouTube