Do you want to increase your car remote control range? I found this tutorial and I think it’s awesome because it helps locate your car in a parking lot or to lock your car if you’ve forgotten and walked away. It’s pretty simple to do and will make your life easier.
Solder that in under the top of the transmitter, making sure that the wire fits in and won’t come in contact with anything. Also be careful because, soldering can damage it with too much heat. Once you’ve finished this part all you have to do is to close the remote up and go test your remote.