Three Pulses converted to one pulse

I am having trouble wiring this up?

I want to add a remote start to my factory keyless entry, but I want to be able to activate the remote start by pressing Lock -> Unlock -> Lock on the transmitter. 

What I need is to get one single negative output after pressing the buttons in the correct sequence to acitvate the remote start.

Or if anyone has a better idea on how to do this, I am open to suggestions. I don't like the idea of having to just press the Lock button three times to start the car, because sometimes when I am trying to lock the doors I will keep pressing Lock til the horn honks that way I know the doors are locked.

I am using a CrimeStopper RS-901 add on remote start. To start it will take either a single negative pulse or three negative pulses.

Do you have a Diagram of the output Relays?

Or does it have a single wire?

Does this have Outputs that Reverse Polarity on a solenoid.

Help me out I am in the Dark here.

Shed some Light on the way it is wired so I can Design you a circuit.

This could get a bit complicated.

Lock -> Unlock -> Lock

Here is what I mean by complicated.

Get an Audiovox (Prestige) stand alone Remote car starter. it utilizes the door lock motors to activate.

Unlike most of the that need to be pulsed 3 times. The udiovox uses the motor lock and unlock motor

+++++=======lock-unlock-lock

Maybe I didn't explain myself good enough.

What I want to do is pres Lock -> Unlock -> Lock -> on the transmitter, by using the power lock wires as triggers for the relays how can I wire up a relay(s) to either send a single pulse from this sequence or send three seperate pulses from this sequence to the negative remote start trigger. If I just wire up the lock and unlock wire to the (-) negative trigger of the remote start it would start on any three button press sequence.

I hope this explains a little more what I want.

With the Circuit I gave you you can not do that.

So lets get a wiring diagram of what you have and design what you want together.

I dpn't have a wiring diagram yet, that is why I amasking for help here.

If the  lock and unlock wires are the triggers how would I wire up the relays?

Will the TR-7 be able to give me a pulse using the lock and unlock pulses from the keyless entry.

I looked at the documentation on pac-audio website and it looks like it only takes one trigger multiple times with a time limit to create on pulse out.

Could you use 3 seperate buttons instead of 2?

Then we could use a Decimal decoder.