Did you read the instructions? You will have to cut the metal line the feed line from the tank. You need to trace that line back from the oem filter so that you dont cut the return line. The T in the glacier sytem needs to be 18 inches or longer after the pump, so You kinda need to do some figuring and get it layed out. You can always call Richard from glacier with any questions, if you dont have his # pm me.