Good question. If you have to tap the ignition system in any way shape or form, the answer is generally yes. If that's what a TT requires (I've never installed one myself), then that's your answer.
You said yourself you bought them with the intention of doing a group-buy. The bottom line is, dont blame the staff when the rules you didn't bother to read get enforced.
If you didn't purchase the remaining 4 solely with the intent to sell them, please tell me how exactly were you planning on installing 5 license plate holders on your p5?
Technically correct; however, we're talking about real-world circumstances. Like I said, do a search... it happens all the time. And you have little-to-no recourse. Anyone can make up an excuse about how modification A. yielded problem Z., no matter how circuitous the explanation.
A dealership doesn't need to 'prove' anything to void your warranty. All they need is probable cause. Do a search, dealerships have voided kids warranties when the ignition system merely appeared to have been tampered with or modified at some time prior.
I'm really not familiar with the '00 ES ABS system because my ES never had it. With that said, the MSP measures speed via two hall-effect sensors that sit on the steering knuckle of the spindle; one on the driver side, and one on the passenger side. These hall effect sensors are essentially...
Convince your boss that you'd be more productive with an auxillary lap-top. Login to one with guest access, and the other with employee access. One for work, and one for play.
Just make sure to have a pie-chart or something minimized on the toolbar of your play computer in case your boss walks in.