The wiring is really easy.

The wire colors were either the same, or similar enough to figure it out. You can cross reference the RAVE as well to make sure.

 

If you're looking for an outside-the-box option, when I got my disco I bought one of these when I realized the original mirror was hosed and the saw the cost for an OEM replacement. It's a huge panoramic/parabolic mirror.



It takes just a bit of force to attach it over the old mirror (reinforced with superglue), but it's been on for over two months without becoming dislodged. Since it's not a flat surface, I can't recall ever being blinded from behind by headlights or high-beams as it refracts away. I wish I had a photo of it, but looking back into the mirror I can see out both driver and passenger rear quarter panel mirrors at a glance.

Can't beat it for $20, I'm a fan.