Ram 1500 Projector Headlight Conversion Turn Signal

[Gantonios]

I’ve installed a set of aftermarket OEM style projector headlights on a 19 Ram classic.

Everything illuminates properly, except when I use my turn signals with the parking lights or all the lights on.

I’m assuming the parking lights are constantly feeding into the LED portion of the headlight, thus not allowing for a blinking effect.

My vehicle has the DRL option set to “Turn Signal” prior to the conversion with the help of AlfaOBD.

I’ve tried playing around with a few settings, such as setting the DRL Lamp Location to “Dedicated”. They wouldn’t illuminate at all. I’m assuming it’s because of a missing dedicated DRL circuit.

They work properly in the daytime. They blink normally when the light switch is set to off or if it’s bright enough outside.

The harness I used has two plugs, one for low beams/high beams and one for the turn signal. There’s no resistors or any extra plugs.

I’m wondering if anyone has ever experienced this issue, or has a way around it?

Thanks in advance.

 

[Gantonios]

Figured it out, this is a knowledge transfer.

There are 3 potential settings in the BCM that can be configured through AlfaOBD that allowed them to function as intended.

1 - Quad Headlamps Enabled -> Set to Not Enabled
2 - Bi Xenon Headlamps Enabled -> Set to Enabled
3 - Park/Marker Lamp Present -> Set to No

I suspect setting the 3rd option was the key to solving the issue.

Hopefully this can help anyone in the future.

 

[hunterdan]

Digging up an old thread I know, but I'm running into this issue. I came from running a set of FORM lights that started having issues (that came with a quad to projector adapter) and picked up a set of aftermarket OEM style projector housings that use the OEM style projector plug.
Lights off, turn signals function. Lights on, marker lamps basically go to full brightness and when you use the turn signals, they don't blink.
I have a dedicated drl circuit run. The new housings don't have a plug or wire for the dedicated drl circuit, and the form harness doesn't have a connection for it, it previously connected to an extra wire coming out of the harness of the housing.
What I've done so far:
Set drl to turns
Had drl drop out enabled
Didn't make a difference.
What I've done since:
Disabled the left and right front dedicated drl
Set to No DRL

I know these BCM's can sometimes take hours for the changes to set. Last I checked, after about 1.5 hours there wasn't any difference. I'm going to check again here in about an hour.
If that doesn't work, I'm going to set things back to where I had them, verify the pin outs on the form harness. And I may eventually add the circuits for the dedicated drl back into the plug.
I have a spare adapter harness coming, it's cheap, but if I end up moving pins around or adding some, it'd be easy to pop one out and add one into one of the other adapters for the DRL. My concern is if I set park/marker lamps present to no, then I may not have any rear marker lamps at night.

 

[hunterdan]

Figured it out after examining the adapter harness. Form split the running light/parking light to go to pins 2 and 4 on the projector plug. Meaning it triggered both the parking lamp and DRL at the same time when the parking lamps were on. The DRL being the brighter function made the parking lamp invisible. I ended up cutting the wire to pin 4, I'm going to order some amp connectors to match my current dedicated drl plugs and attach those to the wires I cut on the form harness. This should allow me to run the dedicated drl circuit again.

 

[RamDiver]

I know these BCM's can sometimes take hours for the changes to set. Last I checked, after about 1.5 hours there wasn't any difference. I'm going to check again here in about an hour.

IIRC, some of the DRL tweaks I performed didn't appear for about 5 days.
I believe this delay is more specifically associated with ignition cycles instead of time-related.

I'm retired and don't drive much, about 10K miles/year.

.

 

[hunterdan]

IIRC, some of the DRL tweaks I performed didn't appear for about 5 days.
I believe this delay is more specifically associated with ignition cycles instead of time-related.

I'm retired and don't drive much, about 10K miles/year.

.

In my case, the harness was literally just feeding the high and low side of the parking/turn signals at the same time when the marker lamps should have been on.