Got mine done today.

Wire routing took the longest. Went from right hand kick panel and followed the factory harness.

Had to drop glove box, pull defrost vent cover and radio trim for access.

Got brake switch signal from RABS module (behind radio) and dropped down the wire to near the trans tunnel for the reverse lights.

Only issue I see that can be annoying is if you had to get in your truck and just back up. As soon as you put it in park and let your foot off the brake doors lock. Rare occurrence though.

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Automotive Electronics Engineer
2000 XLT 2.5L A/T
Mods:
Explorer OHC
Explorer Autodim Mirrors w/ Autolamps
Explorer Sport White Face Gauges