Advance Man Posted August 4, 2014 Just got a new 3500 over the weekend and I was wondering if anyone knows the bolt size that will fit into the pre-driiled holes in the cargo area. I want to install my interior florescent lights from my old van.....Thank you! Quote Share this post Link to post Share on other sites
wollip Posted August 4, 2014 Welcome to the group! 8mm (and I think the thread pitch is 1.25, but don't hold me to that) in ceiling and along the sidewalls Quote Share this post Link to post Share on other sites
Advance Man Posted August 4, 2014 (edited) Welcome to the group! 8mm (and I think the thread pitch is 1.25, but don't hold me to that) in ceiling and along the sidewallsThank you for the welcome and info. Learned alot already and still haven't looked at the whole forum yet. Edited August 4, 2014 by Advance Man Quote Share this post Link to post Share on other sites
