Simple ? about Alpine SEC-8028

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=32826
Printed Date: May 17, 2025 at 11:40 PM

Topic: Simple ? about Alpine SEC-8028

Posted By: voltageGSR
Subject: Simple ? about Alpine SEC-8028
Date Posted: May 27, 2004 at 2:52 AM

Greetings
Have done a few alarm installs - but its been a while.

Went through instructions today and understood everything but this:

There is a harness with 8 wires; 6 of which have to do with door lock/unlock.

Instructions say:
"The SEC-8028 includes two onboard relays for locking and unlocking the door lock system, without the need for external relays. The relays are switched internally when the security system is either armed or disarmed."

the 6 wires: (labels as in installation insturctions)
1. WHITE/ brown - Door lock Common (30)
2. BROWN / Blue - Door lock N/C (87A)
3. BROWN / red - Door Lock N/O (87)
4. GREEN/ red - Door unlock N/O (87)
5. WHITE/ Green - Door unlock Common (30)
6. GREEN/ Blue - Door unlock N/C (87A)

Now the instructions said I would not need external relays, however these wires are labeled with labels in () that are obvious need for relay..? Also, there is a diagram of a "Standard relay for reference" and says "The coil contacts (85 & 86) are not needed they are controlled within the main unit."

I am installing this in a 1991 MR2 NA.

My question is do I need two external relays. If so how to hook up? If not how do I hook these 6 wires up to my unlock/lock triggers in the car?

Thanks! I know this isn't the deepest question - but hopefully so simple one of you can help me out very fast.

IyS

Replies:

Posted By: draasch
Date Posted: May 27, 2004 at 7:04 AM

Power Lock RED / BLACK DRIVER KICK #201
Power Unlock GREEN/ BLACK PANEL

#201- See Negative Pulse Door Lock Diagram.

no you should not need relays

-------------
Good Luck
David
Ace Security
813-376-9778
Tampa
Donate to the 12volt

Posted By: Velocity Motors
Date Posted: May 27, 2004 at 9:33 AM

No need for external relay required for the alarm. This internal relay system can accommodate all the various types of door lock systems .

-------------
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA

Posted By: derek123
Date Posted: May 27, 2004 at 10:45 AM

if you locks are negative trigger:

connect both 87s to ground. <-- think of these as the 'ground supply' to the output wires ( the 30s)

then connect the 30s to L and UL in the car.

Posted By: voltageGSR
Date Posted: May 27, 2004 at 11:50 AM

draasch:
Not sure what you mean. According to wiring diagram:
L = Black (-)
UL = BLACK/ yello (-)

Thanks derek123! Exactly what I needed.
So leave the 87A alone completely?

Thanks again!