Quote:
Originally Posted by This old va
Thank you, I forgot to mention in addition to being a cargo van it is a 2003 7.3. from what I've read it's just I would delete one of the 4 posts and enlarge the three existing holes.
If there is more to it ,or a change in the electrical connections please feel free to school me, I should be able to handle that if I can't I need to bury my tool boxes... lol ��
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You can't simply eliminate one of the mounting studs and enlarge existing pre-2003 door shell holes making this a super easy fix. Spacing differences between the two versions has you drilling at least two new holes in order to securely mount the later year mirror bases going from the 4 post in a 3 post original door.
Existing wiring harness connectors from the door wiring harness to the mirror motor should be the same HOWEVER the up/down/left/right signals might not be the same. Its easy enough to reconfigure the connectors to accommodate the later model years---IIRC wiring colors are the same so you'd have to just match them within the connector.
If the wiring colors do change between years following an EVTM for the "old" vehicle and the newer wiring of the mirrors should restore operation of the mirror to match the door switch movement.
HTH