Rollin'_Coal

I am going to put blue led's in my headlights that flash with my alarm indicator in the dash, or so that is the plan, but can't seem to find where the wires for the red led take off to under the dash. Just wondering if anyone has done this or if someone may know where i can find the wire and maybe a stretch, but does anyone know if the light has 12 volts applied to it, or is it a low voltage signal from the computer or something along those lines? Any help would be great and I'll be sure to get some pictures as soon as its working

Pav1973

If I undersatnd this you want your headlight to flash in time with the little Red alarm active light?

I am not to shure if thats a good idea to run it like that for to long,best put a cut off switch on that so you can shut the headlights off and run the alarm still.

Pav

Wv7o

I think he wants to add LED's to his light housings to indicate that the alarm is on, like an H2, and wants to use the signal for the dash indicator to control the add on LED's.

Rollin'_Coal

Yeah Wv7o is on the right track i want to have the led's in the light housing flash with the dash light not the actual headlight lamp. Still haven't had any luck trying to find the wire.

Pav1973

I was looking in the repair book at the wire digram and no luck,could ask a Dodge mech next time you drive by one.

Pav

TonyB

I checked the dash wiring: It is connected to the can bus for all comm's from engine, body, etc.

This means two things:
1) You would have to get into the instrument cluster itself to wire the additional led's
2) Dodge treats the instrument cluster as a sub-assembly i.e. the truck wiring docs don't detail it.

Tony

TAS

What's the surpose of the blue LED's flashing inside the headlight housing? Maybe my newbness is showing but, just courious.

bob4x4

An alert to the bad guys that the truck is armed

Bob

CatDiesel_762

You really think having flashing lights in the headlights will deter theives?

In my opinion, all you are saying is rob me, I have good stuff inside. I thought the 06 to present no longer have the light indicator flashing unless you have the factory Sentry Alarm system? My 05 flashes, but my father in laws 06 does not.

Shawn

Syndicate

LEDs in the headlight are a bad idea. All they will do is attract attention. If anything I would install the alram with no LED so it suprises them when it goes off. Most car theives can tell by the siren sound what alarm you have and they know how to get around them. Crack heads and punks are one thing but a Pro can get around most alarms. You simply cant stop them, all you can do is slow them down or make your truck too much of a hassle for them so they move on.

vzdude

Security Indicator - The security indicator is integral to the ElectroMechanical Instrument Cluster (EMIC) (also known as the Cab Compartment Node/CCN). (Refer to 8 - ELECTRICAL/INSTRUMENT CLUSTER/SECURITY INDICATOR - DESCRIPTION) .


It works off of the CAN so there really isn't a wire you can tap into. If you want to take the cluster aprat and tap off of the printed circuit board, that would be about the only other option.

ColdCase

Rollin, in case you don't know how the CAN bus works, its a data bus connected to several components where a component, say the ECU, sends a command via a sequence of information bits instead of setting a discrete wire signal to the instrument cluster to set the alarm light. This bus wire is connected to all the components on the bus, but only the cluster picks up the command. There is no way to get at the lamp signal short of breaking into the ECU or instrument cluster or a using a CAN interpreter. I think the adapters that allow aftermarket radios to be put into these trucks are mostly CAN interpreters.

Oversimplified but you may get the idea, they only need to run one wire around the truck instead of hundreds.

Blast Chamber

An easy solution would be to mount one of these in each headlight housing and wire them back to a switched fuse to activate whenever the truck is turned off. Twenty bucks - done.

http://mivasecure.abac.com/varad2/me...roduct_Code=LB