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Mod | | | Forums66 Topics128,049 Posts1,055,740 Members48,426 | | 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!
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Jul 2005 Posts: 21 New Guy | | New Guy Joined: Jul 2005 Posts: 21 | I would like to install after market turn-signals on my 1950 Suburban. Where do the turn-signal wires go? I can't seem to find a way of routing the wires from the rear to the front of the vehicle without being seen.
Anton | | | | | Joined: Mar 2003 Posts: 1,132 Shop Shark | | Shop Shark Joined: Mar 2003 Posts: 1,132 | I routed the wires on my 49 sub back to the bullet tail lights along the upper sides above the side windows before I installed the headliner. The wires will lay in the trough formed by the metal above the windows.
Weeds | | | | | Joined: Oct 2003 Posts: 5,152 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Oct 2003 Posts: 5,152 | Turn signals were not required by law until some years later and therefore were not often installed by the factory.
From what I've seen I believe the factory routing would be under the truck along with the brake and tail light wiring.
However, I don't like wires underneath in the weather so I ran mine above the windows like Weeds described.
1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more... It's true. I really don't do anything but browse the Internet looking for trouble... | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | I think that dual rear lamps were required by law in a few states during Advance-Design years (I think that Washington state is/was one example).
That is one reason why GM provided the Panel-body dual tail lamp accessory in all Advance-Design years (it was an easy matter to mount a second tail lamp on other trucks). In 1954, the dual lamp (front and rear) directional-signal package became available as a GM accessory on all Chevrolet trucks (the wiring diagram/routing for Panel-body trucks is given at the link at the post above).
I have two 1954/55 GM trucks (that coincidentally came from WA) that had factory directional signals with original wiring run along the frame, under the body. The signal systems worked fine after 50+ years (Note: plastic-coated wire came into use in 1954 - I doubt if the cloth-coated wiring would have lasted that long). The plastic coating was quite brittle and when I removed them they broke/cracked all over the place on the wires that ran to the rear lamps.
| | | | | Joined: Oct 2003 Posts: 5,152 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Oct 2003 Posts: 5,152 | I think that dual rear lamps were required by law in a few states during Advance-Design years (I think that Washington state is/was one example). That's interesting. None of the Suburbans or panels I've bought has had the dual tail light arrangement though a couple of them have had the '39 Chevy lights on the sides. Amusing to me is that its the '48 and the '51 that came with those lights, the '53 and '55 1st did not come with them. These are the trucks I own or have owned, not a general statement about what GM was building at the time. My driver Suburban which probably did not start out in Washington does not have the factory turn signal switch, though my other two '54/'55 GMC's and a '55 1st Chevy I parted out, all did. Of course none of these trucks were made here in Washington, since the nearest plant was Oakland California at the time.
1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more... It's true. I really don't do anything but browse the Internet looking for trouble... | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | The '39 Chevy lights might have been the panel-body dual rear-lamp option (RPO 249, available 47-55).
The 47-55 Panel body GM (RPO 249) dual tail and stop lamp equipment was/is the same style of lamps as shown in the installation pages for 54/55 panel-body signals at the link above (see page 10).
| | | | | Joined: Jul 2005 Posts: 21 New Guy | | New Guy Joined: Jul 2005 Posts: 21 | You guys are awesome. Thanks for the info and ideas. Anton | | | | | Joined: Jul 2005 Posts: 1 New Guy | | New Guy Joined: Jul 2005 Posts: 1 | | | |
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