Using the locking tab as a reference, hold it down and work from left to right.
1: Relay - Connect it to your relay or accessory (blue on the STEDI harness).
2: Power Source (+) - Connect the source with an in-line fuse (white on the STEDI harness)
3: Dashboard Light - Normally connected to the dashboard light circuit so that it is on when the dashboard light is active.
4: Earth / Ground (black on the STEDI wiring harness)