Metra Electronics Radio Module Interface

The bell rings 4 times and then stops, then it will do it again. I don't think this is how it was in the factory bells but it works and it plugged right into my 2003 silverado 2500 HD. Keep in mind you will still need to hook up the red wire from your radio and if you want it to turn off when you open the door you will have to find the right fuse... I bought a fuse addition where you take out an existing fuse plug in the link and plug that fuse as well as one other into the addition that will put it to the side... The correct plug place is at the drivers door one of the furthest down and on the side to the front of the truck. It works like a charm now though. Oh and Sometimes the Pins may not be where the factory pins are so check first. Remember this is the one without the steering wheel buttons... if you have those you need a different kit and it's more expensive.