99 Windstar keyless entry

Hi. This is my first post but I have used this site as a great resource for many years. I have a 99 Windstar that has the factory keyless entry. It didn't come with any remotes so I ordered a new remote and tried to program it per the instructions. The instructions say to go from off to run 8 times leaving the key in run on the 8th time. I have tried this several times and cannot get the locks to lock/unlock to confirm programming mode. I am wondering if anyone has any ideas for troubleshooting the system. The dealer is absolutely no help unless I want to pay them $63 hr. to diagnose with 1 hour minimum. I can't seem to find any info on troubleshooting or a wiring diagram that has the keyless circuit. My haynes manual doesn't include it. Also I am hoping someone can tell me how many plugs should be going to the keyless module behind the glovebox. It has 3 slots but only one has a plug. The van has power locks and dual power sliding rear doors if that helps. Also, no keyless pad on door. I was tracing wires and it looks like the van had an alarm at some point but not now. I am wondering if a wire was cut or disconnected or if the module can be deactivated by the dealer like the autolock feature can be. Thanks in advance for any help!