I read quite a few posts about people wanting to add heated mirrors to their '03 '04 4Runners and some years seemed to have all the wiring already there. Unfortunately, if you have a Canadian '04 SR5, only the wiring under the hood is present. The fuse is installed and I believe the wiring stops at connector IC4 pin D4, which is behind the driver's side kick panel.
I already purchased some heated mirror glass replacements, so I'll probably be adding some wiring this weekend...
I already purchased some heated mirror glass replacements, so I'll probably be adding some wiring this weekend...