I installed a Blue Ox base plate on my 2001 Jeep Wrangler. Very easy installation. My tow bar is also a Blue Ox. You can go on their website, Blue Ox Products
, enter your tow vehicle info and they'll match to the proper equipment you need.
When I was in Quartzsite last Jan. and attended the RV show, I came across a company selling a towed vehicle braking system called SMI. They have a very small unit that installs to the brake arm under the dash (no more big clumsy floor units). The "stay-in-play" unit is for gas MH and the "air force one" is for diesels.
If you run across them at a RV show, they'll come to you tow vehicle and install it right there.