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| | | Forums66 Topics128,022 Posts1,055,382 Members48,422 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
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on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Dec 2014 Posts: 12 'Bolter | | 'Bolter Joined: Dec 2014 Posts: 12 | Will a Unity S-18 light work on an AD truck? Does anyone know where I could find a replacement bulb similar to the one in the link? It measures about 4-3/4" in diameter. www.dropbox.com/s/cya3vjofhzzs2nz/Photo%20Sep%2025%2C%207%2057%2056%20PM.jpg?dl=0[/img]
47 Willys CJ2A
52 GMC 1/2 ton
| | | | | Joined: Jan 2002 Posts: 2,839 'Bolter | | 'Bolter Joined: Jan 2002 Posts: 2,839 | I believe the S-18's shaft is/was too long and will interfere with the steering wheel, thus why the S-16 was used on ADs. It has a shorter shaft. The S-18 was seen more on sedans. At least this was what I learned some time ago on the net.
Craig My '50 Chevy 3100 5 window, '62-235cu, 3:55 rear My truck ....... Respect The Rust If I'm not working on my truck, '65 m00stang or VW camper, I'm fishing with the wife or smoking Salmon.
| | | | | Joined: Dec 2014 Posts: 12 'Bolter | | 'Bolter Joined: Dec 2014 Posts: 12 | Thanks - that's what I'm finding as well. It's only 1.25" longer I think, but I guess that's enough to matter. I've found some parts off a S-16 and I'm going to use that to shorten my shaft on my S-18 if necessary.
47 Willys CJ2A
52 GMC 1/2 ton
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