Lucky you Rich. I have the GLS which I believe is not wired for the turn signals. If I could, I'd install those signals you talk about.Quick Q, Ace. Plastic trim tool to remove the mirror? Approach from what end, angle, side...? Pull outward? I really don't relish in the thought of breaking one while attempting to remove it.
The reason I ask: I'm thinking of adding the red or amber chevron LED turn indicators behind the mirrors and tying them in to the LED signal wires already inside the housing. Seems like a simple mod, to me. Besides the fact that I think they are neater than a brand new speckled puppy, I like their safety function for motorists alongside me in adjacent lanes.