I love the Sentinel Headlamp feature. It allows my Jeep to provide me with safe lighting after exiting it at night. We live in a rural area with no street lights. Here how it works.
I researched an old wiring diagram and found that all that was needed to have this feature was plugging in a relay!! And, the plug is already in our Jeeps.
The relay is part number 56000636 or 56009324 and sells for about $50.
Since I part out XJs and MJs, I went through my stash and found I had saved a few without knowing what they were. Think “junkyard” here.
I simply plugged the relay/timer in and instantly had sentinel Headlamps.