Car alarm installation on 1998 Windstar

Hi, I'd like to install A-10 car alarm & keyless entry (unit) myself on my 1998 Ford Windstar 3.0L, 3 doors. I never installed one before and my knowledge on this stuff is minimum. The seller I bought the unit from (internet) said that it was easy to do it myself. All I need is the wiring diagram for my Windstar and the installation manual that's included with the unit. Can anybody please show me the 1998 Windstar wiring diagram ? In the installation guide, there are some types of door lock diagrams : negative trigger, positive trigger, reserve polarity, etc. How do I know which one to choose ? This 1998 Windstar is commonly have a problem with door ajar and dome light. Will it be a problem for the function of the unit or even the installation ? One wire of the unit main harness (orange wire) comes with this following expl. : "armed output (-)500mA. The orange wire provides a ground output while armed to activate an optional starter defeat relay or other device such as power window control module". Does it mean the installation of this wire is optional ? If not, what should I connect this wire to ? The rest of the wires have the explanation to what they connect to, except the orange one above. Thank you in advance for any help. StadiumRocks

Stadiumrocks wrote: Hi, In the installation guide, there are some types of door lock diagrams : negative trigger, positive trigger, reserve polarity, etc. How do I know which one to choose ? This 1998 Windstar is commonly have a problem with door ajar and dome light. Will it be a problem for the function of the unit or even the installation ? One wire of the unit main harness (orange wire) comes with this following expl. : "armed output (-)500mA. The orange wire provides a ground output while armed to activate an optional starter defeat relay or other device such as power window control module". Does it mean the installation of this wire is optional ? If not, what should I connect this wire to ?

Chart shows you NEGATIVE Door Locks.

I have seen only 1 Windstar out of 10 - 20 installs of this year  with this problem.  ( who knows, maybe the customers never thought it was my fault )

ORANGE wire is Optional

MO

Don't Learn from Others Mistakes

You Might Be the One That Knows.

Thanks a lot for both of you. Best regards, StadiumRocks