Hi have tried to attach the wiring diagram as a post to yours for so you could download it & then search for DIM - it seems the pdf attachment may be too large for the server.
However, you can access a full list of the year based Electrical Wiring Diagrams @
https://www.qclt.com/html/volvo_ewd_us_eng/
If you can't find what you want - let me know via the pm system with your address & I'll mail you a physical dvd copy of the EWD up to 2014 if it's of any help.
Cheers
Alan
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The saddest moment is when the one who gave you the best memories....becomes a MEMORY
V70 SE 2004 2.3L T5 Geartronic, C70 2005 2.0T Automatic, Sold 2.4l 20 Valve Automatic Torslander Sold 854 GLT 20v Auto