You don't _need_ it. It senses when the PS pressure is high (meaning you are turning the wheel). Most of the time, nothing really special happens. But the 2.5 could possibly bog down or stall if you start cranking the wheel at low RPM (idle). The computer sees the low pressure signal at low RPM and just taps the throttle a little bit to keep from stalling.
Don't crank the wheel too much on the rocks at idle and you'll be fine. I'm not even sure that mine works and I've never stalled my engine by cranking on the PS.
Bleeding is cake. Get the front end up in the air. Open up your PS reservoir and slowly turn the wheel back and forth until no more bubbles come up. Fill the reservoir if it gets low as the air is bled out.
1995 YJ Rio Grande, 2.5L Low Output Engine
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