The 2021 4Runner has NO canbus (it's an old school design from 2010) so you won't get canbus bugs with these or 7440 LED rear wheels bright! I think maybe three times brighter than standard 7444NA amber bulbs. I chose amber/amber because the combination of white/amber seems a bit strange. Installation required pulling off the inner fender cover (4 x 10mm screws) and reaching out with a hand to unscrew the lantern from its socket. They're polarized, so if they don't work the first time, rotate them 180Β° and try again.
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