back up camera problem

I have a 2002 dodge ram . I have installed an HU with lcd ..The unit has rear camera input .The camera switch wire from the hu is hooked up to the reverse light wire .I put it in reverse and works great .Camera powers up and have great picture ..In drive, camera display is gone .Good so far .Until I am driving and put the turn signal on .The Lcd flickers or press the brake, it disturbs the screen.. I have disconnected camera switch wire and hu is OK .signals dont bother the lcd .. Its like the turn signal and brake are feeding back through the switch wire .. Is this possible Thanks Paul

Depending on where you got the rev lite signal from, should be a violet/black on the left front inner fender. I dont know why it would mess with the HU , but it is.. The light system work through resistance in the cab, then the bcm send out to the relay bank in the engin compartment. So if you go directly to the actual 12v wire to the rev lite, it should take care of the problem... One would think....Tire Proz Stillwater Mn

High End Restyling and Comlete Repair

Yes I did go to violet black . once under the dash ,then under truck heading back to the rear . Same feed back Its like the lighting system is in a loop . touch the brake or signal or head lights and it send some resistance through system , enough to cause a glitch through the back up switch wire to the hu.. I finally feed 12 volts from cigarette lighter and put in switch to manually turn on camera .. No more interference. I like it better can turn on anytime I want . Good when pulling the boat..

have you tried to  put a relay on the reverse feed to isolate the radio reverse lead