PorKen

LASFIT "L1 Plus" H4 LED: 2000LM, 6000K, 20W lo/20W hi, fanless

Amazon - B0CQL2GRZG


(halogen H4: 1000~1500LM, ~3200K, 55w lo/60W hi)


Beam pattern pretty good. Lights up the road nicely.


Piece of paper will not pull out with used rubber seal


Gap without rubber: Phillips 2.0 mm, LASFIT 2.5 mm


New rubber 4.0 mm thick, used (below) slightly thinner (ID 73 mm, OD 86 mm)


Phillips, OSRAM


OSRAM, LASFIT

PorKen

Something to figure out: With both LED bulbs installed, turning on the fog lights makes the headlights switch to high beam. One halogen and one LED, normal operation.

I am guessing this might be a 'feature' of the LED programming for daytime running lights on newer cars?

Fog light relay must be wired through the high beams to turn off the fogs with high beam?

davek9

Ken did you replace the stock Fog relay with a regular Type 53 ?
Doing this should let you run with Hi-beams and Fog's, but should not affect the independent operation of both.

PorKen

53 relay in place of the stock fog relay (92861511702) fixed the high beam problem

Michael Benno

Correct, the standard wiring configuration has the fog light being interdependent on the high beams. When the high beams are on, the fog lights are disabled. You can decouple the fogs from the Hi/low beam by replacing the fog light relay with a standard non-diode relay. This will allow the foglights to operate regardless of high/low beam, and you will not have any issues with the H4 bulb operation.

more info here: Headlight / Foglight interaction prob with LED bulbs

I would love Alan or someone to bread down exactly the current flow issue that is causing the interaction issues. I was brave enough to experiment with relays until I figured it out but not smart enough to understand why

PorKen

I put a 30->87 jumper in place of the fog light relay to make DRLs. This makes them light up in the "on" key position, but they are off in the "accessory" position or when cranking.





More LASFIT stuff: H3, 6000K, 2000LM, 20W, fanless - B0C7G4KLXG




Because of the added thickness of the LED base, I had to use a screwdriver, on a bench, to help push the retainers down and over into place.

Michael Benno

Great work, Ken! I should note that on later cars, with 2 relay sockets for Fogs on 91+ models, you will need a jumper in both sockets. There is an OEM relay bridge (PN 92861512500) that can be used if you prefer the OEM look.



Also that is a great find for the H3. The 2000 Lumen LED will be about 40% brighter than the 55watt halogen bulb (watts to lumen converter) in there and now all the colors on the front will match. Also, I like the single-wire plug vs the two wire units I have been using.