2003 Murano BCM

I am trying to figure on what wires to splice into for the Door Unlock/Lock and the Dome Light.    According to some other posts it states the below to use 13 and 14 at 40 Pins White.  I do not see where there is a 40 Pin connector.  Also,  how do you figure the numbers.  I did not see any Pin numbers on the BCM.   (See picture).  If someone can tell me (1,2,3, or 4 for below pic) for the correct connector and how are they numbers.  Thanks!

2004 Nissan Murano (should also apply to 2003):

BCM is high up to the right of the steering column. Route your remote starter's lock wires right along with the ignition wires.

Lock/arm is 13, disarm/domelight turnon/double-pulse unlock is 14. Does not control windows

There are empty pins that can control the lock/unlock simply strip wires n put into the pins in the bcm.

2003 BCM Murano PIC

 

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Thomas

Is that the "back" of the BCM?

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I would be cautious of the 'should work on 2003'.  I know that my G35 has a completely different BCM from 03 to 04, so I wouldn't be surprised if the Murano had a different one as well.

I would also be cautious about shoving wires in empty pins on the BCM, especially when there are no way to verify them.

The best way to get pin numbers is to reference the service manual for your specific vehicle.  Nissan has excellant manuals, and they are widely distributed.

Depending on what all you are doing, it will probably be beneficial to run wires in to the drivers door, where you can tap the lock/unlock wires.

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Kevin Pierson

Yes, 2003 BCM is different.

I was the one who wrote the article you've read, by the way.

DISCLAIMER:

I CAN tell you the correct location on a 2003 G35, or FX35/FX45..............your Murano is built on the same platform and is PROBABLY the same.........BUT, I've never done locks on an '03 Murano........if I'm wrong and your car explodes, DON'T blame me.

Anyway,

--At the BCM, find a brown plug, approximately 7 or 8 pins wide, by 2 pins tall.

--Look at the plug from this angle: Horizontally, wire-side facing you, clip-side facing up.

--So, at the top of the plug, in the center, should be the clip.......that's the angle you're looking at it from, right?

--To the left of the clip are 3 empty pins.

--You want the FIRST and SECOND empty slots to the left of that clip.........I forget which is lock and which is unlock, but if you get it backwards that obviously won't hurt anything; just switch it around.

Hey Chris, thanks.  So by my pic that would be the #1 brown one.   I will follow the instructions and reverse if needed.  Does anyone know about the dome light or do I have to find the switch.    P.S.  ( I do have the service manual, paid $20.00 to download from Nissan)  but it does not clearly state what needs to be done.   Thanks in advance for your replies.      Thomas

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Thomas

I mentioned the service manual because it will give you the exact pin numbers of every harness in the vehicle.  There most likely won't be any markings on the plug or socket to indicate pin numbers.  Good luck!

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Kevin Pierson

Yes, it does look like the plug would be the one marked #1 in your picture.

What is the domelight wire needed for....installing an alarm too?

There should be an illumination ring around the key cylinder. I believe it is wired identically to the domelight, and comes on when ANY of the four doors are opened.......but you should verify that.

If the illumination ring catches all four doors, just use that......there will only be two wires to test at the light, so that'll be easy.

Chris ... That is exactly what I am doing.  The alarm/remote start  is the APS997.   It  does have a ring that lights up when the door is open.  I will check if it comes on with all the doors / hatch.   Thanks!  

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Thomas

I'm familiar with the APS-997, as I install Audiovox for a living.

If you are using the domelight wire as a door trigger, there will be extra chirps when arming the alarm, because the alarm "thinks" that a door has been left open, due to the domelight delay.

Near the back of the manual, the "completing the installation" part tells you how to "teach" the domelight delay to the alarm, and get rid of the extra chirps.

Awesome Info Chris!   Hey, I check the key ring light and does not come on when the back doors are open.  What do you suggest I splice into?  Do I need to go all the way up to the dome light?   Thanks   Thomas

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Thomas

I was reading a post and it states splicing into 14 BCM ... Chris .... I assume that is the same Brown Module in the pic #1?  

See Below:

Lock/arm is 13, disarm/domelight turnon/double-pulse unlock is 14. Does not control windows

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Thomas

thomas,

For what purpose are you looking for the domelight wire?

Do you want to use the domelight as a door trigger for the alarm, so the alarm goes off when someone breaks in...........or are you trying to get the domelight to turn ON with unlock?

---FOR DOOR TRIGGER (to set the alarm off), I don't know the color of the domelight wire, and the DEI wiring sheet does not list it.

You could temporarily unfasten the domelight, drop it down a little, make a note of the wire color......and then you can probably find the same-color wire at the BCM, TEST IT (of course), and then use that as the door trigger.

Or, you can use the two separate doorpin wires listed on the sheet............the light blue for the driver's door, the red for the other three doors, and connect them both to the alarm using diodes.

--FOR DOMELIGHT TURN-ON (so that the domelight comes on when you unlock the car)

1. When the car is unlocked using the proper wires, the domelight WILL already come on from the factory, as long as the engine is OFF............this applies regardless of whether you find the correct empty pins at the BCM, or run wires into the driver's door.

2. If you perform the extra labor (with a relay) of connecting the Audiovox's GREEN / WHITE domelight-supervision output, it will add two extra features:

A. the domelight will come on with unlock, EVEN IF the engine is running under remote start, and
B. when the alarm is triggered by a thief, the domelight will flash on and off to attract more attention.

It probably isn't worth the extra effort just for those two little things, but it's up to you.

Yes,  I want to use the Dome Light for the Door Trigger of the alarm .    I will take your advice and see if I can trace the Dome wire to the BCM.   I am not sure I know how to connect a relay.   Thanks for you help Chris, I really appreciate it.  Thomas

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Thomas

Hey, no problem.

If you decide you wish to connect the domelight supervision feature (in example #2 above), the instructions for wiring the relay are in the Audiovox's installation manual.

Hey Chris or anyone,  ... Do you know anyone in the Dallas area that would finish this install?    I thought this would not be as hard as it is.   Alarm installs have come along way since I last installed one over 20 years ago.   I ran out of time and patience to install this myself . 

Let this be a warning to anyone who wants to install an Alarm / Remote start.    If you have never done it before I highly suggest to get someone to do it.    I guess I will need to find out who installs the APS997 in the Dallas area and see if they can do it.  Any suggestions please let me know.   Thanks Thomas    

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Thomas

Yes, alarm installs do get harder and harder, especially on the newer cars, and especially if you haven't done it before.

I'm afraid you might have a hard time finding someone to finish the install you've already started.

Most pros don't want to put their name on a job they can't stand behind.....most of us would want to pull everything out, install everything again with fresh (not already cut and shortened) wiring, and then we'll be able to guarantee the job.

You'll also have trouble finding people willing to install a unit they didn't sell, partially because they can't make profit off the product, but also because they are not familiar with it, and it will take longer.

You're wise to look for an Audiovox dealer, as you said. They'll have spare harnesses around, manuals, etcetera.

How close is Rowlett, TX to you? I've been chatting for years online with a fellow named Murph, who works for Best Buy. He seems like the type to do a careful job. And they sold Audiovox for a time, so he'll be familiar with your alarm.

Go to this forum here and look around or search for Murph, and get in touch with him:
https://www.audiogroupforum.com/csforum/forumdisplay.php?f=18

But besides all that, where are you stuck? I mean, if it's just a couple of wires, might as well finish it.

My advice to you would be to try to stick it out and finish it.

In order to do that you'll have to break it up in to smaller sections.  Try getting the alarm installed by itself (power, ground, door pin, parking lights, door lock/unlock). 

Then, upgrade from there (starter kill, remote start, ect).

Unfortunately, door locks are a pain on Nissan vehicles.  Run wires in to the doors, and make sure to seal up door harness after you put holes in it.  After that, the car should be pretty straight forward (alarm wise, at least).

Good luck!

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Kevin Pierson

I found a place, they are charging me $375.00 for the install.   They need to undo what I have done for warrenty reasons .... So I will get a warrenty on the work done which is a big deal to me.   Chris,  I was little more then  half way done with with the install.   I just do not have the time to work on it  I am dropping it off today so they will be working on it while I am at work.    They said it will be an all day job which I can really believe since I had a taste of what it takes!        I really appreciate everyones advice on this site, you all are great.  Thanks! 

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Thomas