Glare free not working: 302a XLT upgraded to Projectors w/ HCM

[HammaMan]

I made my own harness and simply fed the headlights with the same power wire that powers the HCM. The HCM IIRC draws a couple watts while being fed by a 7.5a circuit (most of its power draw is feeding the suspension sensors but it's still trivial power) making it a logical choice to power the little motors that swivel the headlights.

Essentially combined the two circuits into one, being fed off of the BCM with its power wire and 2 lin bus wires running to the lamps (only 3 wires that needed to be added to make the lights function). Instead of using suspension sensors I have a knob that allows me to control the height of the headlamps while underway.

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[Lithium]

I made my own harness and simply fed the headlights with the same power wire that powers the HCM. The HCM IIRC draws a couple watts while being fed by a 7.5a circuit (most of its power draw is feeding the suspension sensors but it's still trivial power) making it a logical choice to power the little motors that swivel the headlights.

Essentially combined the two circuits into one, being fed off of the BCM with its power wire and 2 lin bus wires running to the lamps (only 3 wires that needed to be added to make the lights function). Instead of using suspension sensors I have a knob that allows me to control the height of the headlamps while underway.

That would be ideal, but I already have this harness installed, with the tap for power in the engine bay, so I did my best with that I had at my disposal.

I appreciate your input, leading to this hopeful solution.

 

[Blackbetty406]

I made my own harness and simply fed the headlights with the same power wire that powers the HCM. The HCM IIRC draws a couple watts while being fed by a 7.5a circuit (most of its power draw is feeding the suspension sensors but it's still trivial power) making it a logical choice to power the little motors that swivel the headlights.

Essentially combined the two circuits into one, being fed off of the BCM with its power wire and 2 lin bus wires running to the lamps (only 3 wires that needed to be added to make the lights function). Instead of using suspension sensors I have a knob that allows me to control the height of the headlamps while underway.

So with your headlight motor you used the old vpwr from the reflectors?

I made my own harness and simply fed the headlights with the same power wire that powers the HCM. The HCM IIRC draws a couple watts while being fed by a 7.5a circuit (most of its power draw is feeding the suspension sensors but it's still trivial power) making it a logical choice to power the little motors that swivel the headlights.

Essentially combined the two circuits into one, being fed off of the BCM with its power wire and 2 lin bus wires running to the lamps (only 3 wires that needed to be added to make the lights function). Instead of using suspension sensors I have a knob that allows me to control the height of the headlamps while underway.

So did you move the vpwr from the reflector side to the projector? I wanna say fuse f21 on my truck is like headlights on or something

 

[HammaMan]

So with your headlight motor you used the old vpwr from the reflectors?

So did you move the vpwr from the reflector side to the projector? I wanna say fuse f21 on my truck is like headlights on or something

No, the power for the motors comes from the same circuit powering the HCM. Goes BCM > HCM > left headlight > right headlight. Run with the power is a LIN from HCM to each headlamp individually, thus 3 wires going through firewall.

 

[Blackbetty406]

No, the power for the motors comes from the same circuit powering the HCM. Goes BCM > HCM > left headlight > right headlight. Run with the power is a LIN from HCM to each headlamp individually, thus 3 wires going through firewall.

Ok, I have the precision retrofits harness (ryan b actually) I wanna say lin bus wires are there already, but I just trying to remove the pwr wire that is always hot, and if I can T into that hcm/bcm wire to that single pwr wire I believe that fixes the "always hot" and ghost codes for swivel motors

 

[HammaMan]

Ok, I have the precision retrofits harness (ryan b actually) I wanna say lin bus wires are there already, but I just trying to remove the pwr wire that is always hot, and if I can T into that hcm/bcm wire to that single pwr wire I believe that fixes the "always hot" and ghost codes for swivel motors

Yes, those harnesses aren't made to factory specs for the circuit. If you don't care about the LED blinker out notification you should be able to repurpose one of those wires and reprogram the BCM as I did. I believe they include 1 ea of the turn signal out indicators but I'd have to see them to know for-sure.

 

[Blackbetty406]

Yes, those harnesses aren't made to factory specs for the circuit. If you don't care about the LED blinker out notification you should be able to repurpose one of those wires and reprogram the BCM as I did. I believe they include 1 ea of the turn signal out indicators but I'd have to see them to know for-sure.

I'll have to double check to see if the harness even has led out pins but from the instruction sheet I got for forscan I had to shut those off

 

[HammaMan]

Someone's harness was including them, just turned them off taking the KISS approach.

 

[Blackbetty406]

Someone's harness was including them, just turned them off taking the KISS approach.

Sounds good. Now with hcm/bcm wire would the gauge of wire need a bump in size? I believe it's either 20 or 22 gauge now?

 

[HammaMan]

I ran mine w/ 20ga and it's been trouble free since install.

 

[Blackbetty406]

I ran mine w/ 20ga and it's been trouble free since install.

Another quick question and maybe you mentioned it earlier, did you just repin the factory harness for the headlight connection? If so you happen to have the part numbers for the pins used and connector by chance?

 

[HammaMan]

Another quick question and maybe you mentioned it earlier, did you just repin the factory harness for the headlight connection? If so you happen to have the part numbers for the pins used and connector by chance?

I just wired into the existing harness, yes. seems rather dumb to be using a jumper M/F harness when you can just plug in each wire. Adding jumpers is just unnecessary points of failure. Those are MX150 connectors

 

[Blackbetty406]

I just wired into the existing harness, yes. seems rather dumb to be using a jumper M/F harness when you can just plug in each wire. Adding jumpers is just unnecessary points of failure. Those are MX150 connectors

Well I'll be damned that's the connector I believe i ended up tracking down. Just pull oem harness side pins and reinstalled in the mx150 is all? If so perfect thanks

 

[JScaro]

Today I fed the power wire that was providing constant power to the ballasts (as per the harness instructions via an unused stud on the distribution box,) through a small hole that I drilled near the corner of the fuse box (using a rubber grommet / then extra sealed with silicone,) into the fuse box. I used an add-a-fuse on fuse #19/48, as it's designed to handle a 20a load, it's start / run switched, and I don't have any of the functions that the circuit supports. I had to trim some unused relay bracketry to accommodate the add-a-fuse, but the relay slot is unpopulated anyway.

The headlights now function slightly differently. They used to drop when I turned the truck off. They now stay up when I turn the truck off and then they power off (after set menu delay.)

At startup, they drop from the up position now, do their dance, and raise back up. At startup they used to begin in the down position, go up, then back down, dance, and go back up.

I'm feeling very optimistic that this is going to fix the intermittent "stuck in down position" triggering the previously mentioned HCM errors.

Long story short, I had issues when I just upgraded to the latest HCM / IPMA through FDRS.

I went to LED Projectors from LED Reflector WITHOUT level sensors and all worked as it should - prior to the update.
With the update it REQUIRES you to have the level sensor, so I added them but still wasn't working right.
Then I got to thinking that I read a post about the headlight retrofit and being powered consistently may cause issues (I think @HammaMan pointed this out). I removed the main power wire from my retrofit harness and cycled the truck on and off. Hooked back up the main power wire and BOOM, she works again as she should.

Now my Green "A" shows up (I have the 12" screen)
Lights raise up at start and do their dance
Glare Free is evident while drive, Not like the harsh Auto High Beams
Than lights lower when the truck is turned off.
All HCM DTC codes cleared and I'm a Happy Camper.

 

[Lithium]

Long story short, I had issues when I just upgraded to the latest HCM / IPMA through FDRS.

I went to LED Projectors from LED Reflector WITHOUT level sensors and all worked as it should - prior to the update.
With the update it REQUIRES you to have the level sensor, so I added them but still wasn't working right.
Then I got to thinking that I read a post about the headlight retrofit and being powered consistently may cause issues (I think @HammaMan pointed this out). I removed the main power wire from my retrofit harness and cycled the truck on and off. Hooked back up the main power wire and BOOM, she works again as she should.

Now my Green "A" shows up (I have the 12" screen)
Lights raise up at start and do their dance
Glare Free is evident while drive, Not like the harsh Auto High Beams
Than lights lower when the truck is turned off.
All HCM DTC codes cleared and I'm a Happy Camper.

Just to update from my end, my GFHBs have been functioning without issue since I changed the power source for the ballasts.

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