relay for warn beep with motion sensor

I am looking for a relay to enable the first stay warn beep using the DEI 508D. I currently use the blue wire only with success but having a warning beep would greatly reduce false alarm

This is how I setup the motion sensor in my 2002 VW Golf : [url=http://forums.vwvortex.com/zerothread?id=4414568]http://forums.vwvortex.com/zerothread?id=4414568[/url]

And this is the  motion sensor's manual i'm currently using, I hope someone can help:

[img]https://i5.photobucket.com/albums/y188/kilimats/DIY%20Alarm/instructions1.jpg[/img]  [img]https://i5.photobucket.com/albums/y188/kilimats/DIY%20Alarm/508d-1.jpg[/img]

The image didn't work, here they are

Thank you so much for the quick response, sorry im no electrical guy, not sure what you meants with those numbers

this is how I have the wires conencted right now

- Blue wire from sensor to RED / brown in harness (blue arrow shows location)

yeah its a mess lol, but hidden by a clean trim panel

I can see how much of a n00b i am by reading your post, for example I am not sure what you said by fused by 3amps

Anyway, like i said, the motion sensor currently works fine but without the pre-warn beep, So I was wonderign if I could connect that green wire to a relay, and if so, which relay and how.

If I can figure it out with you guys, I will update my tutorial on the car forum here: http://forums.vwvortex.com/zerothread?id=4414568 . that way many MK4 owner will have easy instruction to upgrade their alarm with a fully working motion sensor