Car Alarms: valet switch, exact model number, valet mode

Question
it is a two wire set up. it is a viper alarm grey and black wires i beliveve. how do i know which one to ground (black i would assume)? also the alarm is already set into valet mode is that how i set the new pager just in valet mode then switch it back to normal? Thanks for all yuor help
shaun
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The text above is a follow-up to ...

-----Question-----
ok my pager for my alarm broke and i had to put the alarm into valet mode but one small prob the wires are there but no switch or button installed. I was able to gound them  and switch the alarm into valet mode but i just got the new pager and i am wanting to install a switch for the valet mode and i am wondering if what kind of switch to install is it the kind where there are three prong on the back and two are for the valet wires and the tird just runs to a ground? i am not sure and i want to do it correctly please let me know

thanks
shaun
-----Answer-----
A typical valet switch will only have 2 connections on it, not three.  Typically one of the wires is indeed a ground and the other feeds that ground back into the brain.  When the brain sees a sequence of grounds to the wire it responds accordingly.  You should be able to pick up a valet switch for under $5, just stop into any local install shop and ask them to sell you one.  I have at least 20 sitting in my box from various projects so a store should have plenty available.  

If you have three wires for the switch then this would be a non-standard setup and I would need to know the exact make and model of your system to do some searching for a manual.

Answer
Yes those sound like the correct wires, post the exact model number of the Viper and your email address and I will send you the owner's and installation manuals.  They will list every option the unit has as well as explain every wire going to the system.