A:AnswerOmg Molly you sound like me! I found the best way is to inform yourself by reading reviews from everywhere that has the item to be installed. Takes a bit of time but in the end well worth it. Another key is to purchase the item from a reputable company...like BEST BUY. The last thing they want is a bad install review reflecting on their company. That will keep a lot of ppl from purchasing anything. Good of luck Molly.