2003 Dodge Caravan, Prestige APS-996

I'm installing a Prestige APS-996 and need some help. 

The instructions say connect the tach input signal wire to the negative side of the ignition coil.  I'm installing in a 2003 Dodge Caravan.  Are the following wires at the ignition coil the correct wires?

For a 2.4L use blue/green or blue/tan and on a 3.3L/3.8L use blue/green, blue/tan or blue/orange?

Also, I've read the following in another post, I'm a little unclear on it.

When referring to the 12V (lt. blue/red (10A)) wire at the ignition harness the following is mentioned.  "This wire is rated at 10 amps only.  If installing any system with high current outputs, go to battery for 12v."

This wire is rated at 10 amps max.  I just can't figure out why I can't use this wire for +12V battery source.   From what I see everything is operated by relays.  Would I need to provide high current to this input?  I have no problem connecting to a high current supply, but I just want to understand why it would be necessary.  The ignition switch is supplied by this wire and then when key is turned sends power out thru various other wires.  Am I incorrect?  Can anyone explain the difference for this?

As far as Start Inhibit Relay.  From what I understand, this relay is optional.  What it will do is not allow power to go to the start solenoid wire when the alarm is in a certain state.  Is this something I want to use?  What benefit will it give?

Thanks very much for any help..

Ken

I have an APS-996 and I have one problem.. 

I need a ground output that's only grounded during start. 

My problem is this... When I remote start, heat won't work.  If I disconnect the ground output from the remote start that goes to the relay to supply the 180 ohm for the secondary start then the heat will come on.  So this output that i'm using from the remote start is always grounded while remote start has control.  Once the key is put in and brake depressed heat will come on.   Or like I said, I can disconnect the ground and heat turns on.

What have I done wrong?

Thanks... Ken

Ok, it's not working...

Here's where I'm at... I thought everything was fine... sent car out... the next day it came back with check engine light lit... it became hard to start with key.. kept cranking. wouldn't start very often with key.... would start fine with remote.... I unpluged the 2 main connectors from the aps-996, took the car for a ride, and a few minutes later light went out... Plugged back in, and all seemed fine... over the next hour I tested the car by starting with key and with remote... seemed fine... about 2 hours later I went out and tried to start with key, and it just cranked... turned key off, tried again.... wouldn't start..... tried with remote and it fired right up..... The check engine light came on a few minutes later....  Again I unpluged the connectors from the aps-996 and all would be fine again...

Here's what i have

2003 Dodge Caravan... Came with Keyless entry...

12V lt blue/red wire at ign harness for power

Now I need to stress... to correct the problem I just disconnect the plug from the alarm/remote starter control module... I am not removing any wires off ignition harness or anything... I'm just unplugging at the box... Once I do.. problems go away after a few minutes of driving...

Any clue?  I could really use the help....

Thanks.. Ken

Ok, I see the wire you are talking about... There is a BLACK / YELLOW wire.. ground output during start... It says that it's a 300mA ground output...  You are saying to totally get rid of my relay and resistor and just connect that wire to PURPLE / brown...  

Like I said it does work fine at first... after a while it goes crazy..

Thanks... Ken

Thanks johnmax.... I connected it that way and i've been checking the car every few hours, and sofar it's working great... I appreciate it...  How about door triggers?   Any trick for that?  I got a diode isolation diagram... shows cutting the individual trigger wires going into the bcm, and putting a diode inline, and then splicing off each of them thru another diode and then combining them all to the trigger from the aps-996...  So each door needs 2 diodes....  Is that the best way to do it on this car?

Thanks... Ken