05 mazda mpv lock wire location?

Hey, I am having a problem finding which wire is the single wire for the lock/unlock.My information says that it is below the column in the keyless module,but I cant really locate it,any help or photos would be appreciated.I know it is a single wire system using diodes and 1000k ohm resistor. Also ,the weird thing is with this van is by all accounts it should have a immobilizer system ,yet it does not. It has the large key and all info in manual says it comes equipped,yet nothing at the key cyl and no light or symbol on dash.I hooked up remote and it works perfect with no by-pass installed???? Thanks,bruce