Sorry, I did not take pic when I was doing the job. However, after taking off the rear wheels, you can easily see it. It is located just between the big axle carrier bushing behind the wheel carrier and the rubber mounting of rear stabilizer bar. There is about 2-inch-long axle carrier that is not covered by anything, so you can use jack stand to support the rear body at that point on both side.

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--2004 E53 X5 4.8is - ECE version; right hand drive; Located in Hong Kong; ext. black sapphire metallic; int. leather black; adaptive dynamic bi-xenon headlights; 16:9 onboard monitor w/o navigation; 20" genuine BMW Y-spoke 214 wheels with Bridgestone Dueler H/P Sport tires; Int. rear view mirror w/ compass.