I installed a Alpine 9856 on a 96 Toyota Land Cruiser, the power turns on, plays cd and sounds normal. but whenever I switch the "power/source" button to tuner and the hu will automatically power off and power on. I'm not sure what seems to be the problem?

 

that's pretty bizarre; don't Land Cruisers have a motorized antenna? You sure you got both the antenna *and* and antenna power lead hooked up correctly?

 

the power will come on for a sec and off. and it will keeping on doing it until my fuse is blown. I have rechecked all the connections and everything seems fine.