i dont believe that you can use a normal coaxial cable. it would not matter anyways because if your are going to put in your own aftermarket antenna in they usually come with a good length of cable with them. here is one that you can use http://www.frys.com/product/3721776?...H:MAIN_RSLT_PG. what do mean exactly when you say the old antenna was cut/removed. the e39 antennas have a different connector on them so you have to buy an adapter for it to work with aftermarket radios.