dei 545t

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=118860
Printed Date: May 06, 2025 at 9:23 PM

Topic: dei 545t

Posted By: tegguy
Subject: dei 545t
Date Posted: December 27, 2009 at 4:29 PM

Alright so I am thinking about purchasing the 545T for the automatic headlights but I have one question. I am installing a remote start also I know the 545t taps into the ignition circuit to tell when you have the key in. When I remote start the vehicle won't it activate this circuit also turning on the 545T? Is it possible to install a relay in the circuit so the alarm can remote start the vehicle but only enable the 545t when the key is in the run position?

I will be honest I don't have the module yet and I can not find a manual of the install anywhere so I am hoping someone can help me out with this. I am trying to keep my headlights off untill I put the key in the ignition or disarm the alarm (if I turn this feature on with the 545T)

Replies:

Posted By: Twelvoltz
Date Posted: December 27, 2009 at 4:53 PM

What is the exact make and model of the remote start? What is the make/model/year of the vehicle?

You might be able to open the ignition input to the 545T using a status output from the remote start. You might also be able to use the keysense in the vehicle to activate the 545T.

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Installer, IT support, and FFL. I need less hobbies.

Posted By: tegguy
Date Posted: December 27, 2009 at 4:55 PM

Sorry forgot that 1992 Acura Integra with the Viper 5901

Posted By: Twelvoltz
Date Posted: December 27, 2009 at 5:30 PM

There are a bunch of ways to get it to turn off when running on remote start but it depends on your preference...do you want it to come on only when the key is in the ignition? If so you could wire a relay activated by the keysense wire in the vehicle, controlling the ignition input to the 545T.

The polarity of the keysense wire would determine how to wire the relay but I am pretty sure the Acura uses a negative keysense wired like:

Pin 85: negative keysense wire in vehicle (I am pretty sure it is the blue/white wire in vehicle's harness but my notes don't cover the '92)
Pin 86: Ignition input to relay
Pin 30: Ignition input to relay
Pin 87: Ignition output to 545T

If it is a positive keysense you would need to wire it like this:

Pin 85: Positive keysense wire in vehicle
Pin 86: Ground
Pin 30: Ignition input
Pin 87: Ignition output to 545t

The problem with this setup is that the relay would be on the whole time the key is in the cylinder and the ignition is on. If it were me, I would probably wire it up using the status output from the remote starter. Wired like:

Pin 85: Status Output from RS (blue or blue/white or even yellow ignition three negative output from that Viper unit)
Pin 86: Ignition Input
Pin 30: Ignition Input
Pin 87A: Out to Ignition input of 545T

Wiring it this way, the relay would only be activated while the remote start is activated. It will disconnect the ignition input to the 545T while the vehicle is running under Remote start and reconnect the wire when the remote start is off.

Hope this helps.

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Installer, IT support, and FFL. I need less hobbies.

Posted By: tegguy
Date Posted: December 27, 2009 at 5:37 PM

Twelvoltz wrote:

Pin 85: Status Output from RS (blue or blue/white or even yellow ignition three negative output from that Viper unit)
Pin 86: Ignition Input
Pin 30: Ignition Input
Pin 87A: Out to Ignition input of 545T

Wiring it this way, the relay would only be activated while the remote start is activated. It will disconnect the ignition input to the 545T while the vehicle is running under Remote start and reconnect the wire when the remote start is off.

Hope this helps.

Great idea. Your good. Now my question is I believe this module can turn on the headlights when you disarm the alarm or arm the alarm and keep them on for a certain amount of time but with the remote start activated this wouldn't work but I should be able to simply use another relay to use this feature so it will turn the headlights on when the alarm is disarmed wether the remote start is on or not correct?

Posted By: Twelvoltz
Date Posted: December 27, 2009 at 6:01 PM

I have only installed a handful of these modules and don't recall ever utilizing the orange wire as most were installed without any type of security system or remote start. Hopefully someone else in the forum can speak on this but I am pretty sure the orange wire controls the timer circuit so it probably operates independently of the ignition input.

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Installer, IT support, and FFL. I need less hobbies.

Posted By: tegguy
Date Posted: December 27, 2009 at 6:03 PM

So your saying the orange wire might bypass the ignition switch and pull directly off the 12v constant and go through the lighting circuit