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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!
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#87820 11/27/2004 10:00 PM | Joined: Aug 2003 Posts: 17 New Guy | | New Guy Joined: Aug 2003 Posts: 17 | I've got a stock 3 wire(lt. blue,dk. blue,yellow)turnsignal switch. Can I use this with 2 filament bulbs in the rear (brake,turn,park)?. I currently have only ft. fender mounted turn signals. My 58 (chevy)shop manual doesnt list any turn signal switch. Is the GMC that different? My 59 Apache has a 5 wire switch. From reading past posts, I see most reference the 7 wire switch and I've printed all those related diagrams but no help with a 3 wire. Any help would be appreciated. Thanks Pat in Denver
58 1 ton Napco
59 1/2 ton Napco
58 1/2 ton Napco
55 1 ton 9’ bed
58 3/4 ton stepside
55 LCF boom truck
(3) 57 2 tons
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