Fwiw I've just installed this unit today, and I found it easy enough to remove the A pillar trim. Ease off the cover on the handle, undo the two bolts, the trim is held on by 3 clips, they lever off with a bit of care and the entire trim comes away (remains attached to the small speaker).
I prefer this method as I've previously cracked the windscreen on my SQ5 trying to bury a wire behind the A pillar....
Hi @8balladdict ….so what's it like installed?.....surely you found time this weekend!......Hope you enjoy your purchase ...Matt
Hi @Daffy ....just PM'ed you