Truck-Lite LED Headlight Flickering

[dcullen]

Hello,
Shortly after I bought my 2006 E350 PSD I installed Truck lite 5x7 LED headlights and they are AWESOME. However, the issue I have with them is that if I do not pull the headlight switch out to "ON", they flicker, to the point where it looks like a strobe, it is NOT subtle. Now, I have had this issue the entire time they have been installed (about 1.5 years) and always thought I just had a regulator/ rectifier/ alternator type issue or a problem with the Day time running lights (DRL) module, So I just always drive with the headlight switch pulled "ON". But I was just reading that truck-lite sells a module to fix "flickering" on the Jeep JK LED lights... which made me think it may be the same issue (https://www.amazon.com/Truck-Lite-Headlamp-Anti-Flicker-Module-Harness/dp/B00F50T8GM).

Anyone have flickering Truck lite LED's that behave like mine?

If not, does anyone know how to check the DRL module without a oscilloscope to see if the frequency from that module is different then the headlight "ON" circuit?

Thank you,
-Dan

 

[Sheep Shagger]

I'm fairly certain there is no PWM in the headlight circuit, so I doubt that will do much good. To check, simply look at the wiring diagram, no need for an oscilloscope. I don't think my 06 even has DRL, but I need to check.

 

[Finatic Angler]

I had a problem with Jk.

I took the connection apart, cleaned and applied dielectric grease.

Solved my problem

 

[dcullen]

I'm fairly certain there is no PWM in the headlight circuit, so I doubt that will do much good. To check, simply look at the wiring diagram, no need for an oscilloscope. I don't think my 06 even has DRL, but I need to check.

I have the factory service manual and have reviewed the wiring diagrams before posting here. Also, section 97-1, in "Wiring Diagrams 2006 E-series" of the factory service manual is labeled "Daytime Running Lamps." The "Daytime Running Lamps (DRL) module" is also shown in the "Component Location Views" in section 151-1.

 

[Pntyrmvr]

That module installed only in Canadian trucks? You might not find it there.


"Talk is cheap. Whiskey costs money."

 

[djbonsu]

Interesting, Ive had mine installed for a little while now and have had no problems. I do not have daytime running lights tho. I bet the DRL module runs the light at a low voltage which would give you the flickering problem. I say find the module and disconnect it (if its possible) or just turn the lights on all the time.

 

[Bikersmurf]

On Canadian trucks the high beams come on for daytime running lights. However, they aren't half as bright as the headlights. This would support the lower voltage theory.

 

[Accrete]

while I can't duplicate your Ford light switch with my Chevy switch, i'll just share my install of the same 5" x 7" LED lights has been behaving fine since the install in ~October 2013.

: ) Thom