hi guys i retro fitted a sat nav into my vert but i have a problem. when the car is not running i get my cd changer working. when the car is running it wont work. also discovered if i put the heaters on it worked. some times its like the radio freezes when i start the car up. every thing else works a treat such as sat nav and the obc. also i need to find out some how where and how i connect the fm ariel up to. thanks paul