We do offer a 4-pole trailer wiring harness for your 1992 Toyota Pickup truck. Draw-Tite offers a plug-in harness that requires no cutting or splicing of wires, part # 118379. This harness installs at your two tail light assemblies with easy to use plug-in connectors. The only actual wiring needed is to attach the white ground wire's ring terminal to a clean bare-metal surface behind the driver's side tail light.
The linked video will illustrate the process.
You might want to add a mounting... view full answer...
The only real option I have for you would be the TruXedo Lo Pro QT Tonneau Cover part # TXLOPRO. You will need to go the product page, enter your dimensions into the form on the page and then we will have a custom made cover made for your vehicle.
I checked with Craftec and they do not have anything at all that would fit your truck bed. view full answer...
For a 1993 Toyota Pickup, the correct trailer wiring harness is # 118379. I have included a link to the installation instructions and a link to a video showing a typical installation.
If you have a 1993 Toyota T100, you would need # 118496. I have included a link to the installation details for this harness as well. view full answer...