Need taillight wiring help!!!

[RamAirZ]

Hey guys, I went to wire up my taillights today and ran into some questions. My truck is a 67' but the bed is off a later version with side markers (don't know the exact year the guy didn't remember). My factory rear harness plug on my 67' has 2 light green (reverse), 1 dark green (rh signal?), 1 yello (left signal?) and one brown (normally this would split into 3, 1 to each light for taillight and 1 for license plate correct?). My new wiring is different. I would have just plugged it in but the guy had it all cut up underneath. The plug for the new bed has 6 wires. 2 light greens, 1 with black stripe (I know these run to my reverse), 1 yellow with blac stripe, 1 brown, 2 dark greens, one with black stripe. Now the passenger light has the 2 dark greens running into it and the drivers side has the yellow and 2 browns. I'm assumining one of the browns runs over to the license plate. Can I wire up the lights to the plug that came with the bed and plug it to my harness and it work? According to the wiring diagram I saw posted on here my passenger light should have one brown and a green, then the light green for the reverse. The driver should have one brown one yellow and the reverse light green, then one brown going to the license plate. Hope I didn't confuse anyone, I just want to get this right.

Reverse lights



New plug


Old plug


New and old side by side


Passenger light


Drivers side



Any help would be great, thanks!!!

[mr48chev]

Ok I didn't find what I was looking for in a search and I am at work and don't have access to the shop manual.

I believe that you can just plug the bed harness into the trucks harness and away you go. If I am not mistaken the marker lights just tie into the tail light circuit on each side.

Every GM vehicle that I have ever seen is color coded the same for wiring.
The colors should be the same as the later trucks http://www.chuckschevytruckpages.com...schematic.html

[RamAirZ]

Ya but the wiring diagram on this site shows one green and brown to one side, not 2 greens. I'm thinking it's basically the same but different (if you get what I mean). I'm pretty sure i can just wire everything to the new plug-in and match everything up and it will work. If I wanted to use my old plug-in I would need to figure out what wire is which.

[mr48chev]

The second green would be the backup lights.. That should be the lighter green of the two green wires.

You can use a test light to check at the connector plug on the cross member to make sure of what circuit each wire belongs to.

[RamAirZ]

Ya I ran out of time today. I'm just going to wire them up with spades to the new plug-in and see if it works