We are looking at a tt. It would be our first trailer( we now own a small MH). Once we thought we had completed the deal on a Jayco tt the dealer stated that we would need a brake controller intstalled on our Ford F150 which is to be out tow vehicle.(cost approx. $200) I thought the brake controller came on the tt. Are there two parts--one on the tt and one on the tow vehicle? Any help would be appriciated as you can tell we don't know much about tt. Thanks!