Reverse light switch
 

I don't have working back up/reverse lights on my truck. I checked the fuse and voltage to the fuse box and bulbs. All good. So i am assuming that it is the reverse light switch. After some searching, i believe this should be on the transmission, drivers side. Trouble is i can't see anything other than the shift selector. Hopefully there are some pictures attached - one showing where the reverse light switch might be meant to be, one showing a connector with a wire coming out and then back in on itself. I believe at some point in its past, the engine was changed on this truck. The plate on the door says i have transmission E. Is there any chance that the reverse light switch was removed, and the circuit now controlled by the shift selector?
https://cimg9.ibsrv.net/gimg/www.f15...47b9de6289.jpg
https://cimg1.ibsrv.net/gimg/www.f15...e466ce2e59.jpg

Yes, the MLPS contains the reverse light switch. Click this & read the caption:

https://www.supermotors.net/getfile/...bnail/mlps.jpg
(phone app link)

Look up your truck's wiring diagrams here:
http://www.bbbind.com/free_tsb.html
You have to provide an e-mail, but it doesn't have to be yours or real. Click WIRING DIAGRAMS when you see that button.

Thanks Steve, i will read whilst munching my sandwich later on