new antenna, 2 way programming

I installed a compustar model 2wss-as on a buddies truck. I soldered every connection and checked for proper wire prior. He got this alarm from, I'm assuming an unauthorized dealer. It was missing antenna and pre-wired relay for 2nd ign,str,or acc. so we ordered a new antenna (ant-2w-900fm) and I just made up another relay. The problem is once I try to program the remote the headlights flash twice. I can not get headlights to flash once. I installed a pro series on my truck and had no problems. I have been researching and Ive tried all suggestions offered for programming the 2-way. I also read something about the antennas being programed to the brain from the factory. If you get a new antenna it must be progammed by the remote. If this information is correct... heres the million dollar question how the hell do you program the remote with a non programmed antenna and how the hell to you program the antenna with a non programmed remote lol.

Ok that could be a problem I will have to check that. An autorized dealer told me the part number I needed so I never questioned it. Would you have any idea the part number and/or where to purchase. I appreciate your help.

Ok good I will just take the one he bought cause I know its the same one I have because my range is not that great. When I installed it I didnt like the way it looked in the windsheild so I mounted it vertically in the A-piller and bent the antenna out ha ha I know not too smart. But I do have a question about my pro series, my parking lights stopped flashing upon alarm, disarm, and remote start. Beside the fuse is there any other setting I could have set on accident while changing some program options? Thanks guys