school bus alarm

My friends are going on a road trip this summer across the country. Their vehicle of choice is a short bus. They want a simple alarm on it, so I offered my knowledge and labor as a "donation". All I need is basically a shock sensor and triggers for the doors and windows. I will need 7 triggers to cover the windows and doors. I know that I will have to drill holes to accomadate all this. My question is whether or not i can splice off the existing door trigger outputs from the alarm and connect the wires to all 7 triggers. Can I do this or do i need some special alarm that has 7 trigger outputs?

Thanks,

Dyer

Great! Do you know of any low dollar alarms. All I need is one that can do the door triggers and shock sensor. Nothing else matters. I would like to stay under 50 dollars.

thanks for your help,

dyer

Here are some to choose from.... do some research first before you buy.

http://search.ebay.com/search/search.dll?GetResult&SortProperty=MetaLowestPriceSort&query=alarm&from=R8&ht=1&category2=14934&combine=y&st=2