2 530t and a 529t
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=100984
Printed Date: May 19, 2024 at 6:41 PM
Topic: 2 530t and a 529t
Posted By: big d z
Subject: 2 530t and a 529t
Date Posted: January 09, 2008 at 6:28 PM
I'm installing 2 530T for front two windows and a 529T for sunroof.
When wiring up the ORANGE ground-when-armed wire, do I need to diode isolate it since I have 3 wires going to the single ground-when-armed output of the alarm?
Replies:
Posted By: tedmond
Date Posted: January 09, 2008 at 9:31 PM
yes its would be best if you diode isolated them. Your ground when armed will only give out 250mA to power a relay. If you are powering a startker kill relay and 2 window modules, your kinda pushing the limit of the output. YOu might want to wire in a relay just to play it safe and still diode isolate them.
Posted By: big d z
Date Posted: January 09, 2008 at 10:56 PM
The g-w-a wire is a (-)500mA output. It'll be connect to 3 window modules. Should I still use a relay?
Posted By: frans-c
Date Posted: January 10, 2008 at 3:33 AM
Uhm, why are you using two 530Ts for two windows only? A single 530T controls two windows in both directions.
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F R A N S
1985 Mercedes-Benz 230E
320 000 km / 199 000 miles
Full MB Service History
Posted By: big d z
Date Posted: January 10, 2008 at 11:19 AM
frans-c wrote:
Uhm, why are you using two 530Ts for two windows only? A single 530T controls two windows in both directions.
Typo. I'm using 2 530Ts for the front 4 windows. :)
Posted By: big d z
Date Posted: January 10, 2008 at 3:16 PM
So, is this how I would hook up the relay?
86 ---- (+) constant 12v
85 ---- (-) ORANGE 500mA output from alarm
87 ---- (-) common ground to truck
30 ---- (-) 3 ORANGE wires from each module
So when the alarm sends out the (-) output to terminal 85, this energizes the coil, causing terminals 87 and 30 to close which will then ground all 3 ORANGE wires from the 3 modules to b grounded to the truck.
Correct?
Posted By: tedmond
Date Posted: January 10, 2008 at 3:35 PM
correct. just make sure you diode isolate the 3 wires going to terminal 30. you can also play it safe and place a diode across terminal 85 and 86. cathode (band) on 86.
Posted By: big d z
Date Posted: January 10, 2008 at 3:45 PM
When isolating the 3 wires going to terminal 30, I would put the cathode on terminal 30 so that no (-) signal from one of the modules would go back and be picked up by any of the other modules, correct?
Posted By: OmarR
Date Posted: January 20, 2008 at 11:23 PM
Do not use a relay. Use the diodes if you want to be safe. If you use a relay, you will now have a relay latched while your alarm is armed. Some people will argue about the effects of this kind of drain, but I personally have drained a battery in 24 hours with a latched relay.
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