help w/side marker lights for a dually?

[crewcab4x4]

Hello all,
I have a 1986 GMC crewcab dually. I am in need of the side marker light assemblies for the front and back of the dually fenders. I am having zero success finding them anywhere on the web, and the local junk yards have none.

It looks like the front side marker lights on 73-80 pick up (amber lens) and the rear side marker lights on a stepside 73-80 pick up (red lens) will work.

Can any of you tell me if they are interchangeable? If they are not, anyone know where I can find them for sale?

Thank you,
Crewcab4x4

[Your41Plague12]

I know that the red lens is interchangeable with the stepside lens. You may be right about the amber lens. Find a $3 junkyard one and try it!

EDIT: Here's a link I found.
http://www.rustrepair.com/PARTS_PAGE.HTM?p=SM-CHEV.LAMP-CPU.73.LAMP

[LeoP]

have you tried www.partstrain.com

[Your41Plague12]

I did a search on PartsTrain (http://www.partstrain.com/store/?N=0&Nr=AND%28universal%3A0%29&PN=7360&VN=4294967011+4294965721+4294965682+4294965703+429 4965695&domain=partstrain.com&Nr=AND(universal:0)) for you, and it shows the red lenses there too. I searched for a '78 though, I forgot what year yours was. Anyway, between this link and the one I previously posted, all the lenses are there.

[tahoe 9955]

check out partslocator.com and automotix.com