Compustar CM3300 - 05 Honda S2000

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=76731
Printed Date: May 12, 2025 at 2:15 PM

Topic: Compustar CM3300 - 05 Honda S2000

Posted By: mitchsf
Subject: Compustar CM3300 - 05 Honda S2000
Date Posted: April 24, 2006 at 5:13 PM

Hi All,

I'm replacing an Autopage alarm in the S2000 with a Compustar 2WSS-A with CM3300 controller, and I have a couple questions.

I don't have a manual on the Autopage and I don't understand how the locks were wired. Both the pink/black (lock) and YELLOW /GREEN, pink/blue (unlock) wires in the car were cut, and each side of each wire goes to the Autopage controller. My guess is the alarm contain relays that are normally closed. When locked or unlocked, the normally open side of the relay applies +12v to the lock side of the wire, isolating the normally closed connection. My question is, is it really necessary to use the relay in this way, or can the Compustar wires simply connect directly to the S2000's lock and unlock wires without relays? They apply a ground when active, but lock and unlock can be reversed for +12v locks, as far as I can tell from the manual. I hope this is described clearly.

Also, dome light supervision uses the door trigger. Both the car and alarm are (-). Do I need a relay for this? My guess is no, as long as the door triggers don't directly switch power to the lights.

I think I have a handle on everything else.

Thanks,

Mitch

Replies:

Posted By: Twelvoltz
Date Posted: April 25, 2006 at 8:14 AM

If you take a look at the wiring information on the 2005 S2000 it lists your doorlocks as 5-wire. Which means your factory door lock actuators rest at ground, when the aftermarket relays are triggered they seperate one leg of the actuators wires, and provide +12V to it, since the opposite leg is resting at ground the actuator moves. When you reverse this process by providing +12V to the opposite wire the actuator moves in the opposite direction. If your Compustar unit has internal relays then you do not need external relays, but most systems just provide a negative door lock trigger to activate external relays.

Your dome light supervision may require a relay, depending on the Compustar, if the Compustar provides a low amperage output then you will need a relay to provide a stronger ground to turn on the dome light.

Hope this helps.

Posted By: mitchsf
Date Posted: April 25, 2006 at 4:35 PM

That helps a lot. I now know what to do.

Thanks!

Mitch