for $120 you can buy a bolt up reciever style hitch. Or for $200 pay someone else to do it.

Many of the wiring kits available today plug into the existing wiring harness. no need to splice any wires at all. go with the 4 prong flat. they're sealed water tight no need to worry about corrosion.

I did it myself on an 88 S10 Blazer all for under 175 bucks. now I have a heavy duty hitch that will tow just about anything.