82' Mercedes Keyless Entry Install

hey everyone i have decided to invest in a keyless entry system in my first generation w126 Mercedes 300SD. It has vacuum powered locked run by a pump in the trunk. I bought the Valet 712t from Circuit City for $60. I am having a little trouble install it. I have it wired up to the vacuum pump in the spare tire well. There are three wires on the plug for the pump... ground... yellow-12v (when unlocked)... blue-12v (when locked) I have 6 lock/unlock wires Violet - unlock #87 normally open (input) Blue/black - unlock #30 common output BROWN / black - unlock #87a - normally closed violet/black - lock #87 normally open (input) WHITE/ black - lock #87 normally closed GREEN/ black - lock #30 common output I have it wired like this: Now, when i press the unlock button..the pump will cycle..unlock the locks but then keep running and re-lock them when i press the lock button nothing happends. can Anyone help? Thanks Kris

i have also tried this method of wiring: it worked but only for either locking or unlocking.

my first method of wiring would work but the polarity on the one wire is wrong..its -12v and i need +12v maybe this was a waste of my $.

never mind...i discovered that up until 1985 there was no actuator in the driver's side....it would be pointless to install a remote locking system that only could lock 3 doors.

OK I just recently found out that I can add an electric actuator to the driver's side door and make this work.....I just need (a lot of) help wiring up this unit to the vacuum pump. I turn to you guys..as i am no expert in this field. I have understanding--to a certain degree but nothing as much as the professionals. Thanks again. Kris