no dash lights with 545t on nissan titan

I added the DEI 545t automatic headlight module to my 08 Nissan Titan, but can't get the dash lights to come on. The headlights and parking lights come on automatically, but I can't get the dash to light up. I've tried several red with blue stripe wires with no luck (including at the dimmer switch). I even tried wire 57 just down from the tail lamp relay at the IPDM which looks like it should be upstream enough to trigger both parking lights and dash illumination. Anyone have a clue what I'm doing wrong or a better wire to connect to? It's difficult to find it by metering since whenever I turn the dash lights on with the switch the parking lights come on. Thanks.

Just a thought, try covering up, with your hand, the photo eye that senses the amount of daylight. Cover it up for about 30, see if the dash lights come on.  The 545t has a DRL (Daytime Running Lights) feature that will turn on the headlights unless desabled.

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Yeah, I tried that. I tested it during the day when the headlights wouldn't kick in so I had to cover up the sensor to test it. The headlights do kick in after a few seconds as well as the parking lights, but no dash lights (day or night). I did cut the red wire inside the 545t box to disable the daytime running lights. Don't the running lights only turn on the headlights, but no parking lights (at least during the day)? Thanks for the suggestion.

What do you have the Blue, (parking light output),wire connected to?  And what is the Green,(headlight output), wire connect to?

Also the Brown....and Violet.

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Brown and violet I have connected to 12 volt constant power, the green headlight wire I have connected to the blue headlight wire on the brown eight pin plug in the IPDM, and the blue parking light wire is the one I'm having the problem with. I don't know if there is one single wire that I can connect to that will turn on both dash lights and parking lights, or if I need to connect to each separately.

All the wiring guides I can find indicate a RED / Blue (+) wire.

Bulldog Security list as:   RED / Blue (+) @ ELECTRIC BRAKE Pre-wiring Harness, (WHITE, 6-PIN PLUG), PIN 4, NOTE #5

NOTE #5: the ELECTRIC BRAKE Pre-wiring Harness is located Under the DRIVERS DASH, and to the RIGHT of the STEERING COLUMN
 

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Thanks. I found a Nissan Rogue forum with two other people having the same issue. Must be a Nissan thing. Any chance of connecting to the BCM or is that not good to do?

Good News and bad news....

Good news is that it is possible..

Bad news is that you need to test at the switch..

The Switch sends from what it appears to be grounds to the bcm.

It has 5 input connections and 5 output connections in the bcm.

Then.. the BCM will turn on all parking lights including the cluster.

I read my alldata diagram and they appear to be negative wires.

What you can do is go to the combination switch and test to see which one gives a ground output when the parking light switch is activated(OUTPUT). Give me the color and then I will give you the other color wire(INPUT) to make it work.

Using a relay you then do the following.

85--GROUND
86--PARKING LIGHT FROM 545T
30--(INPUT WIRE)
87-(OUTPUT WIRE)... and this should make it work...

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Eric
Audiomaxx
528 East Fordham Road
Bronx NY 10458
Compustar Top Gun Dealer Award 2012-2013

According to the wiring diagram the tail lamp is Input 4 (green with yellow stripe) to Output 5 (red with green stripe). I'll verify it in the next day or two with a meter. Any chance of frying the BCM this way or is it pretty much protected with the relay? Thanks for the help.

I would recommend going to the steering column and test there.. don't go to the BCM, although those wires lead there. It is less confusing if you go to the switch itself. And no, it shouldn't get fried because you are not giving it any signals. It is the factory bcm wire that is giving it that signal just like if you were turning the parking light manually. Example.... input, output.. both "short" to each other when turning the parking light manually. Its a matter of finding which combination works.

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Eric
Audiomaxx
528 East Fordham Road
Bronx NY 10458
Compustar Top Gun Dealer Award 2012-2013

Well, it took me awhile to get to doing this, and then it took me awhile to track it down. Those voltages do some weird things going to and from the BCM.

I could not figure out how to do it the way you recommended (couldn't find exactly where to meter), but I was able to meter at the BCM (with colors from a wiring diagram as my guide). My previous post about Input 4 and Output 5 was backwards. It needed to be Output 4 and Input 5 (the other one was turning on my non-existent fog lights). It took me awhile to figure it out, but input from one thing is an output to the other (go figure). I ran a wire between the two (after metering) and my parking lights/dash lights immediately lit up. I then wired the relay, and it worked. Yahoooooeeeeee!

THANK YOU VERY MUCH! EVERYONE WAS A HUGE HELP! I couldn't have done it without you explaining it. Once you did it started to make sense. I feel like now I could wire anything at the BCM now. Thanks again.

bryaneh wrote:

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Well, it took me awhile to get to doing this, and then it took me awhile to track it down. Those voltages do some weird things going to and from the BCM.

I could not figure out how to do it the way you recommended (couldn't find exactly where to meter), but I was able to meter at the BCM (with colors from a wiring diagram as my guide). My previous post about Input 4 and Output 5 was backwards. It needed to be Output 4 and Input 5 (the other one was turning on my non-existent fog lights). It took me awhile to figure it out, but input from one thing is an output to the other (go figure). I ran a wire between the two (after metering) and my parking lights/dash lights immediately lit up. I then wired the relay, and it worked. Yahoooooeeeeee!

THANK YOU VERY MUCH! EVERYONE WAS A HUGE HELP! I couldn't have done it without you explaining it. Once you did it started to make sense. I feel like now I could wire anything at the BCM now. Thanks again.

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hi i just tried doing this(ran a wire between Output 4 and Input 5) not only it turns on the parking light and the dash it also turns on my low beam headlight is it suppose to do that? thanks for the help

Hmm, not sure what's going on. When I did it, it didn't turn the headlights on. Maybe try making sure all of your wire connections are good? But, come to think of it, I was TRYING to get the dash and parking lights to come on (because they wouldn't) when my auto headlights went on. I have the headlights wired direct (not through the BCM). I'll try to get out and disconnect my headlight wire and see what happens sometime this week, it's kind of late tonight.

Just saw your post lol. Great. Glad to hear that you got it working.

The thing is that when doing alarms we don't really care about the interior cluster lighting up. As long as the exteriors do then we are good. That is why there really isn't any type of info on this setup. With proper testing tools and the drive to make it work you have indeed figured it out and I am glad you took my advice.

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Eric
Audiomaxx
528 East Fordham Road
Bronx NY 10458
Compustar Top Gun Dealer Award 2012-2013

bryaneh wrote:

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Hmm, not sure what's going on. When I did it, it didn't turn the headlights on. Maybe try making sure all of your wire connections are good? But, come to think of it, I was TRYING to get the dash and parking lights to come on (because they wouldn't) when my auto headlights went on. I have the headlights wired direct (not through the BCM). I'll try to get out and disconnect my headlight wire and see what happens sometime this week, it's kind of late tonight.

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thank you for your help. it was a mistake on my part because i connect the wrong wires together bcm has 2 wires that is supposed to be blue and sky blue, mine was a green color instead of sky blue. its working now and thanks for all your help