where is the diagnostic connector on my truck

It is under the hood on the side of the main fuse block (see diagrams below) See the link below to a list for the trouble codes.

https://www.2carpros.com/articles/toyota-trouble-code-definitions-and-code-gathering-method-1990-1995

See the diagram below for the location of the Data Link Connector (below)

where do I find the obd connector on a 1986 Toyota Pickup

diagnostics box under hood.

I can't find the diagnostic box near my engine fuse box on my 1984 Toyota Hilux Pick-Up? I don't even have the Engine light on my instrument cluster, checked all the bulbs, shined a light behind every bulb socket, help!

it is usually near the fuse box under the hood, please go to this guide to check it out:

https://www.2carpros.com/articles/toyota-trouble-code-definitions-and-code-gathering-method-1990-1995