Open the connector, attach a set of male and female terminals to the Mini Breakout adapters to create a T-harness.
For voltage: connect your test lead(s) to the appropriate Mini Breakout adapters for signal and ground.
For current: connect your amp probe to the appropriate terminal wire.
uTest Advanced Terminal Test Kit (AES# 16-200)
Image below: http://www.aeswave.com/images/products/16692.jpg