Adding Lights Caution

Pompey

Tremor Addict
Joined
Aug 19, 2020
Messages
1,341
Reaction Points
3,826
Location
Granite Belt, Queensland
Current Ride
2018 Subaru Outback
Current Ride #2
1999 Subaru WRX Club Spec Evo 3
if you have the factory LED lights and want to add driving lights, light bars, etc, there is a degree of difficulty being able to do this. It seems that the factory lights run off a canbus system where there is a constant supply of power to the lights. I pulled the headlight out of my truck and it appears there is a control unit built into the body of the headlight that receives both the constant power and signalling from the bcu/lcu as to what to do. This signalling is effectively data which will not be picked up by a multimeter but probably would by an oscilloscope. If the attempt to power anything by one of these wires, I am told that you could blow the bcc or lcu.

I spoke to Stedi i Melbourne and they came across this problem with a Toyota Prado. One of their installers tried to hook up to the data wire and blew the bcu/lcu. Cost thousands, it was a brand new car and it took over 6 weeks to get from Japan. They found that it was better/safer to grab the power from the stalk on the steering column, before it gets to the bcc/lcu.

I think I will invest this, and was wondering if anyone had a suitable wiring diagram.
 
That is why I use the upfitter switches (other makes have different names for them) for all my vehicles since they were made available. My current vehicle a TRX waiting on my build the lights including the Baja Designs fogs are on switches.
 
I
That is why I use the upfitter switches (other makes have different names for them) for all my vehicles since they were made available. My current vehicle a TRX waiting on my build the lights including the Baja Designs fogs are on switches.
am using the upfitter switch to supply power to the relay, and the high beam as the switch
 
@Nick@ApolloOptics and/or @Baja Designs might be able to help you out with some info.

It’s my understanding that when folks swap the factory fog lights with the Baja Designs dual light kit, they usually have one set of lights powered by the factory button and another set powered by an upfitter switch. So it seems like it should be possible to reuse the switch and power.
 
@Nick@ApolloOptics and/or @Baja Designs might be able to help you out with some info.

It’s my understanding that when folks swap the factory fog lights with the Baja Designs dual light kit, they usually have one set of lights powered by the factory button and another set powered by an upfitter switch. So it seems like it should be possible to reuse the switch and power.
Cheers. I’ll look into it.
 
I’d recommend avoiding the high beam trigger entirely and just running the lights purely off the upfitter.

That said, if you’re dead set on using a high beam trigger, it’s best to go directly to the BCM.
Local laws require the lights can only be on when the high beam is on. Is there a guide on how to go directly to the bcm?
 
7C1C2462-DF90-457B-BBAA-1EF2808D907E.png



This is how it’s done on the 2017-2020 Raptor, I don’t have this diagram for a 2020+ Super Duty unfortunately.
 
It is really not that big of a deal to use the switches. This way there is no potential problems with the system detecting either a higher or lower load. To each his own.
 
if you have the factory LED lights and want to add driving lights, light bars, etc, there is a degree of difficulty being able to do this. It seems that the factory lights run off a canbus system where there is a constant supply of power to the lights. I pulled the headlight out of my truck and it appears there is a control unit built into the body of the headlight that receives both the constant power and signalling from the bcu/lcu as to what to do. This signalling is effectively data which will not be picked up by a multimeter but probably would by an oscilloscope. If the attempt to power anything by one of these wires, I am told that you could blow the bcc or lcu.

I spoke to Stedi i Melbourne and they came across this problem with a Toyota Prado. One of their installers tried to hook up to the data wire and blew the bcu/lcu. Cost thousands, it was a brand new car and it took over 6 weeks to get from Japan. They found that it was better/safer to grab the power from the stalk on the steering column, before it gets to the bcc/lcu.

I think I will invest this, and was wondering if anyone had a suitable wiring diagram.
Depending on the style and draw of the lights you are adding this adapter is available:

https://www.starkey-products.com/Ford-Superduty-Parking-Lights-Adapter-LED-Headlights-2020-2021
 
This is why the Upfitter Integration Module exists. You can program it to monitor the CANbus for certain messages and then trigger outputs accordingly. It does require knowledge above just a basic wiring splice, but it’s the right way to do things.
 
This is why the Upfitter Integration Module exists. You can program it to monitor the CANbus for certain messages and then trigger outputs accordingly. It does require knowledge above just a basic wiring splice, but it’s the right way to do things.
Is it possible for someone who isn't a fleet or professional upfitting company to program the Upfitter Integration Module?

Based on my research Ford only provides access to the programming software to fleets, not to individual consumers. I would love love love to have access to it.
 
Is it possible for someone who isn't a fleet or professional upfitting company to program the Upfitter Integration Module?

Based on my research Ford only provides access to the programming software to fleets, not to individual consumers. I would love love love to have access to it.
I believe that there is another thread on here that someone found the plug end for the snowplow prep around the front passenger side wheel well. There is a wire in that connector that is a high beam trigger wire. I will search quick and see if I can find it. I believe you may be able to find it in the body builder manual as well that is available online.
 
I believe that there is another thread on here that someone found the plug end for the snowplow prep around the front passenger side wheel well. There is a wire in that connector that is a high beam trigger wire. I will search quick and see if I can find it. I believe you may be able to find it in the body builder manual as well that is available online.
 
Back
Top