Should I get a hitch receiver?

Basically I want to use my truck for towing, but I'm not sure if my bumper hitch is up to the job.
My truck has the optional bumper, witch is in pretty good shape. But I will be towing a camping trailer that is about $2,000 pounds fully loaded (and I think it has brakes - have to check and fix the wiring), and I think it may be a tad too much for the bumper. I've seen a Toyota truck that had the ball ripped out of the bumper, and I don't want that to happen to me while on the Trans-Canada Highway.

And if I should get a hitch, should I just get a 2,000lb Class I or spring for the 3,500 Class II?

Also: how difficult is it to install a 7-pin wiring harness with a brake controller?

thanks.

I would spring for the 3500 class II hitch. If you are 12volt smart you should have no probelm wiring up the harness. Just going to have to figure out what wires are what on the truck.

Ok thanks.

Ok, after looking for hitches I found this:
Replacement bumper

Which appears to be rated as a Class II hitch.

Before when I said that my bumper appears to be fine, I meant that it is structurally sound. But, it is pretty dinged up and has a hole about 8cm in diameter on the left side due to rust.
So: would this work?

You will be better off with a receiver type hitch mounted to the frame

may I ask why?
I checked the instructions for the custom receiver from the same site and it requires removing the bumper in order to be mounted between it and the frame, so it wouldn't really have a stronger mount than the bumper.
I won't be towing over 2,200lbs, so the bumper hitch should be durable enough.

Oh and I just checked: my trailer does not have brakes, but they can be installed for about $150.
I'm pretty sure I'll have to get brakes because the manual says that any trailer over 1,000lbs needs them, but will it be OKish without them?

You are always best off getting a frame mounted reciever...it is the strongest and most sound. Firstly because of the amount of tongue weight...you say the trailer is 2000lbs...but whats the tongues weight on that? Is there stuff mounted on the front of the trailer? IE..gas cans, sparetire...toolbox???? ETC.....

The wiring is not hard...I have a 4 pin round done on mine, I am using a bumper hitch with less than 250lbs tongue weight so no need for me to get a receiver although I prefer them overall.

The tongue weight is only about 150lbs max. I can lift up the tongue in order to maneuver the trailer around by hand.

Then you should be ok with a bumper mount but the receiver is always stronger. I dont know what bumpers can hold...but you are only as strong as your weakest point...and with bumper being tied into a frame by brackets then bolts....that would be a failure spot if anything was to happen. with a receiver you know its bolted strasight onto frame direct