LED Headlight with fog light issue...

[-=Jeff=-]

Yeah, I know it has been posted and gone over several times.

BUT

Now time to post my solution I used on my 1990

**Disclaimer: Findings based on my 1990 and FSM, other years may vary**

In the FSM the shows that the Fog light relay grounds through the High Beam. When the high beams are activated in the OEM solution, 12v is applied on both sides of the coil for the relay which then causes the lights to turn off.

When we switch to LED, the high beam filament is replace with electronics, so that does not work so well. Most use resistors, which to me, still gives the load of a Halogen/ Filament light, yes it works, but I want the efficiency benefit.

I acquired a socket and relay from a donor harness I have, I added the relay to my harness to accomplish what I need. Here are the details:


Find the Fog Lamp relay. in my 1990 it is the furthest to the right under the dash.. Look for the Light Green wire. that is the wire you need to manipulate..

Unpin the LT GRN from the current relay move it to 86 of the added relay.

Pin a new wire in the spot where you removed the LT GRN (it is either 85 or 86), Pin the other end of this wire to 87a of your added relay.

On the added relay, Pin 30 and Pin 85 are both connected to ground.

Done, no wires cut, not relays tampered with. I have not installed LED Headlights just yet, but got the car ready for them. So this should work without issue. works fine with my current lights. I will be adding LED Headlights and LED Fog Lights soon.

[Ccmano]

Nice, mine will be in process tomorrow. Sounds like the most elegant solution yet.
H
:cheers:

[XfireZ51]

I used a variation of Yun’s solution by cutting the relay leg connected to the lt grn wire and then soldering a wire to that cut down leg running it to a ground using as stud found halfway up alongside the door opening. The stud will be easier to see if u remove the side bezel for the fuse panel.

[Ccmano]

Relay location is Driver side or passenger side?
H
:cheers:

[-=Jeff=-]

Passenger side

[XfireZ51]

FSM shows location incorrectly. Of the 4 relays there, its the one closest to the passenger door opening.

[-=Jeff=-]

to update.. the Mod I made works as expected (like factory) with LED Headlights and LED Fog Lights

[Ccmano]

to update.. the Mod I made works as expected (like factory) with LED Headlights and LED Fog Lights

Agreed... mine too.
H

[ghlkal]

Find the Fog Lamp relay. in my 1990 it is the furthest to the right under the dash.. Look for the Light Green wire. that is the wire you need to manipulate..

Unpin the LT GRN from the current relay move it to 86 of the added relay.

Pin a new wire in the spot where you removed the LT GRN (it is either 85 or 86), Pin the other end of this wire to 87a of your added relay.

On the added relay, Pin 30 and Pin 85 are both connected to ground.

Done, no wires cut, not relays tampered with.




Nice, thanks for posting this.


Bookmarked for when I get LED headlights ...

[-=Jeff=-]

Nice, thanks for posting this.


Bookmarked for when I get LED headlights ...

Want a set of LED headlights? PM Me. I have a set with maybe an hour of time on them. I need to remove them as they cause static on the FM of my Aftermarket Radio.. I also have the JDM Astar rear LED bulbs (caused the same issue for me)

I will be going back to my Halogens

[XfireZ51]

Want a set of LED headlights? PM Me. I have a set with maybe an hour of time on them. I need to remove them as they cause static on the FM of my Aftermarket Radio.. I also have the JDM Astar rear LED bulbs (caused the same issue for me)

I will be going back to my Halogens

Jeff,

I don’t have any issue w the Osram’s and Appradio4!

[-=Jeff=-]

Guess I am just lucky, I have had issues with reception in my car for whatever reason.. unfortunately I have to go back to the halogens for now

[Paul Workman]

I used a variation of Yun’s solution by cutting the relay leg connected to the lt grn wire and then soldering a wire to that cut down leg running it to a ground using as stud found halfway up alongside the door opening. The stud will be easier to see if u remove the side bezel for the fuse panel.

Works, yes. But, now your fog lights operate independent of you headlights - they won't turn off when high beams are turned on, unless you manually turn them off.

No issue in IL. Local laws may vary.

[XfireZ51]

Guess I am just lucky, I have had issues with reception in my car for whatever reason.. unfortunately I have to go back to the halogens for now

Bummer. Is it the same issue if u went w LED fogs?

[Ccmano]

Works, yes. But, now your fog lights operate independent of you headlights - they won't turn off when high beams are turned on, unless you manually turn them off.

No issue in IL. Local laws may vary.

That’s exactly what I wanted. I suspect that’s one of the last laws the police will enforce in places where that is the case. Just look at all the goofy headlight configurations that are out there when you drive anywhere at night these days.
H
:cheers:

[-=Jeff=-]

Bummer. Is it the same issue if u went w LED fogs?

I have a set of JDM Astar LED Fogs, no issues, other than the light pattern on them.

I can try Ferrite beads, Worth a shot, if not then back to Halogen. I did notice an odd pattern and a dark spot from the LEDs.. We will see how it works out

[XfireZ51]

Works, yes. But, now your fog lights operate independent of you headlights - they won't turn off when high beams are turned on, unless you manually turn them off.

No issue in IL. Local laws may vary.

Paul,

I wanted them to stay on w high beams. Did the same thing on my Xfire.

[Paul Workman]

Paul,

I wanted them to stay on w high beams. Did the same thing on my Xfire.

Gotcha. PM sent.

[UnderPressure]

It's funny... I just did an install of the Afeax LED headlamps and stumbled into this fog light issue. Didn't take long to figure out what was up, drew out a plan to do this "piggy back" relay and thought I wonder if someone on the registry has done this... the answer is always yes. This really is a fantastic archive for our cars.

Quick product review: the Afeax LED headlamp replaacement from Amazon (B07BWBRDJ5) $85.99 for the pair.

The install was straightfoward. The bulb almost fits in the headlamp bucket, but does fit under the retaining ring, so if you are careful to keep it "eve" as you install it, it will go in straight and not interfere with anything.

The bulb looks a little "gimmicky" but as night fell i really was quite impressed with the beam pattern. Here's a pic of the unit installed and the low beam pattern on the highway after a few rounds of trial and error adjustments:

https://scontent-sjc3-1.xx.fbcdn.net/v/t1.0-9/87900293_10103671611473215_641638152330543104_o.jp g?_nc_cat=101&_nc_sid=8024bb&_nc_ohc=ZxKZ6ZDhYicAX_hekf3&_nc_ht=scontent-sjc3-1.xx&oh=acf3c3e09a00db58f05d5b921f78e7ea&oe=5E9805CB

https://scontent-sjc3-1.xx.fbcdn.net/v/t1.0-9/89787009_10103671611722715_7711021946359513088_o.j pg?_nc_cat=104&_nc_sid=8024bb&_nc_ohc=aHWOuRAJaNcAX8b2Jg7&_nc_ht=scontent-sjc3-1.xx&oh=87f3243857e8e71cf6528ea401897a7b&oe=5E96F91F

Ok... what did I do wrong here, these images are blowing up the thread

[Paul Workman]

Yeah, I know it has been posted and gone over several times.

BUT

Now time to post my solution I used on my 1990

**Disclaimer: Findings based on my 1990 and FSM, other years may vary**

In the FSM the shows that the Fog light relay grounds through the High Beam. When the high beams are activated in the OEM solution, 12v is applied on both sides of the coil for the relay which then causes the lights to turn off.

When we switch to LED, the high beam filament is replace with electronics, so that does not work so well. Most use resistors, which to me, still gives the load of a Halogen/ Filament light, yes it works, but I want the efficiency benefit.

I acquired a socket and relay from a donor harness I have, I added the relay to my harness to accomplish what I need. Here are the details:


Find the Fog Lamp relay. in my 1990 it is the furthest to the right under the dash.. Look for the Light Green wire. that is the wire you need to manipulate..

Unpin the LT GRN from the current relay move it to 86 of the added relay.

Pin a new wire in the spot where you removed the LT GRN (it is either 85 or 86), Pin the other end of this wire to 87a of your added relay.

On the added relay, Pin 30 and Pin 85 are both connected to ground.

Done, no wires cut, not relays tampered with. I have not installed LED Headlights just yet, but got the car ready for them. So this should work without issue. works fine with my current lights. I will be adding LED Headlights and LED Fog Lights soon.

A schematic...would be nice, Jeff!

[XfireZ51]

Was out to Pizza Night on Friday and decided to use LED headlamps which I normally don’t bother w. I usually use HID fogs. It looks like headlamps need an alignment adjustment. Anyone have a procedure and/or headlight aiming tool for this? Seems mine are not reaching out quite far enough even for low beams.

[Paul Workman]

Was out to Pizza Night on Friday and decided to use LED headlamps which I normally don’t bother w. I usually use HID fogs. It looks like headlamps need an alignment adjustment. Anyone have a procedure and/or headlight aiming tool for this? Seems mine are not reaching out quite far enough even for low beams.

What worked best 4 me was 1st to sit in the car w/ half tank of glass on level road and adjust the low beam cutoff to intersect the road at approximately 300 feet. Then check the high beam pattern height and check the pattern to see if it shines just a little above eye level seen from the drivers seat.

The high beam pattern location depends on which lights are installed, is why one optimizes the LO beam cutoff first to assure safety (NOT going to blind on-coming traffic).

Then, once happy with beam height, look to see that the LO beam pattern illuminates the road AND the shoulder (especially the RIGHT shoulder!)

*NOTE: I found that all LED headlights are not created equal, resulting in less than ideal results with some headlight aiming jigs. And, regardless of what jig is used, ACTUAL TESTING is the only way to be sure it's "right". Being that our cars are so low to the ground, we have a little more latitude for adjustment than other vehicles (long as the cutoff is @ or below our eye level), e.g., why trucks have their lights mounted low, relative to the driver's view! That said, if several ppl flash their HI beams @ you, you might need to depress the lights about one revolution (on adjustment screws). Also, shining the lights on a garage door is a good way to adjust the cutoff heights.

[-=Jeff=-]

A schematic...would be nice, Jeff!

Sure it would.. some day when time permits