Guy, here is a link to JC Whitney which I found to be the least expensive for the "BrakeMaster", especially when you use their $75.00 coupons. I have this set-up on my Honda CR-V and plan to install it on my new Honda Accord. If you use more than 1 car you do not need to purchase the activation cylinder, just a 2nd vehicle kit for a little over $100.00 (Scroll down on JC Whitney page for info).

As for tapping into the air system, that is the easy part. There is a valve near the rear of the Prevost bus that accommodates a fitting for this system. Jon W. can give the exact valve location for the connection. Takes about 1/2 hour including running the line to the connection on the rear of the bus. The most time consuming task is hooking up the "Brakeaway" system under the hood. If you want this feature for a 2nd car you will need to purchase a 2nd setup but not the cylinder. Roadmaster factory in Portland, OR ,gives 2 hours labor for installation of the complete system.

Once this is installed you may add less than 2 minutes to the connection time of attaching your toad. Outside you simply use a quick-connect for the air line and snap on the emergency disconnect to the switch. Inside it is simple to slide the connection onto the brake pedal and insert the pin on the floor attachment. The air hose connector is another quick connect. Ready to go!

Many people have the brake system described by Ray and are very happy with them. SMI has a system many RVers love. I did a lot of research and asked owners of many of these devices and decided on the Roadmaster 'Brakemaster' because it suits my needs.

Good luck with whatever you decide CarGuy. You are sure at the right place to get lots of advice and opinions.

Darl