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Click on image for the lowdown. 
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| | | Forums66 Topics128,019 Posts1,055,343 Members48,419 | | 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
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Jul 2001 Posts: 3,887 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Jul 2001 Posts: 3,887 | "marker lights" are the ones on the roof corners of big trucks, they're on any time any lights are on - if you mean the parking lights, yes originally they would have come on at the first switch position and the 2nd switch position would have been headlights only, but modern vehicles have the park and headlights on at the samre time ["running lights"] and the harness maker may have incorporated that feature, easy enough to doBill | | |
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