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the ball is going to depend on the size that the trailer tounge is. example: the tounge on my boat trailer is 2". so, i need a 2" ball.

depending on how much weight you are gonna have, you can only tow max 5000 pounds max. (prolly wont have that much?!) if you have a hitch on your truck, you should also have a place to plug the wires in. knowing UHAUL, they will prolly try and sell you an adaptor or something. not sure what the adaptor is called.

 

i have one similar to this one, but mine has wires coming out of the other end. hope this has helped ya. good luck.

 

The ball may be too high on your 4WD truck, so that the trailer is pointing upwards. That's not good. I've driven a few hundred miles like that, but it was scary. A receiver hitch will fix that problem.

You need to find a place to attach the safety chains to the bumper or truck. I used big eye bolts in the two small bumper holes.

Last time I used a U-Haul, the coupler was universal for any standard ball. I've always used a 2-inch ball with U-Haul.

Assuming that they haven't changed since the last time I used one, the U-Haul will probably not be plug-n-play for lights.

If you don't have a trailer lighting socket, then you will need an adapter box. Your truck has separate wires for turn and stop lights, but the U-Haul has one wire used for both. You can't just connect the two wires from the truck together. There has to be an adapter box. U-Haul should have one, but check in advance.

If your truck has a 4-wire trailer lighting socket, it's 3 females and a male. The U-Haul needs 4 females. They should have an adapter, but check in advance.

Free advice from much experience with U-Haul trailers:

After they couple the trailer to your truck, shake the coupler HARD, then tighten the coupler handwheel again. Repeat.

Check the trailer lights before you leave the lot.

Check the dust covers on the trailer hubs. Make sure that they are there and they are tight. If a dust cover falls off, the bearing will burn up and the wheel will fall off.

Make sure that the safety chains are crossed under the coupler, so if the coupler comes off of the ball, the chains will catch it.

If you drive too fast or you catch the right wind, the trailer will start to sway. If you don't stop the sway, it can wreck you. If the trailer starts to sway, take your foot off of the gas and coast until it stops swaying. Don't hit the brake, that makes it worse. Somebody posted a trailer sway video on here recently. If I find it, I'll add it to this post.

 

Assuming they haven't changed things, you will need an adapter. The U-Haul has four round pins.

 

Here's that video:

http://www.youtube.com/watch?v=C19wxe0eXq8

 

U-haul's 4-pin harness is the same as any other 4-pin harness. Your truck needs to have 3 females and 1 male (standard 4-prong harness) and the Uhaul will have the opposite.

If you have no wiring on your truck, this is the easiest thing you can buy to add trailer wiring to your truck. It's plug and play (no splicing) and takes the electrical feed off your tail lights and provides you with a standard 4-pin wiring harness.
http://www.etrailer.com/t1-2010_Toyota_Tacoma.htm

 

You probably could tow off the bumper but if it were me I wouldn't. As mentioned above, the bumper is a high point to tow from and the trailer will not track well. If it were a short distance, no problem but it'll get really old really quick when every time you hit 40 MPH that trailer starts wagging like an excited dog's tail.

Also, I bought a Hidden Hitch for my '07 and it's a no-drill installation. I did it myself in about an hour in my apartment building's parking lot. Class III is what you want for the Tacoma and is rated up to 5,000 lbs (500 lb tongue weight).