Look at my website for example of KX3 plus KXPA100 installed in an RV (4wd truck, in my case, which tows a 5th wheel): <http://www.kl7uw.com/Mobile.htm>http://www.kl7uw.com/Mobile.htm 73, Ed - KL7UW http://www.kl7uw.com Dubus-NA Business mail: dubususa at gmail.com