Front side marker issue (Page 1/1)
Yannsky JUN 09, 12:37 PM
Hi

I have a weird issue with my front side marker.

When I turn left it’s the right side marker blink but all other left flasher light blink on the left side.

When I turn the park light or headlight on the front side marker flash the right side.

Any idea which ground is loose or cut?
Thank you

Ground under headlight are none corroded and are well tighted up to the body

Car is a 87

[This message has been edited by Yannsky (edited 06-09-2019).]

Gall757 JUN 09, 05:49 PM
I am betting that the front right parking light bulb is bad and just happened to make a circuit when it failed. The Ogre is our resident expert on these issues and should be along shortly.
Yannsky JUN 09, 09:08 PM
No both front park ligh are lightning on park and flasher mode.

But I have led with double function as light bulbs could it be that?

Thanks Gall
dremu JUN 09, 09:37 PM

quote
Originally posted by Yannsky:

No both front park ligh are lightning on park and flasher mode.

But I have led with double function as light bulbs could it be that?

Thanks Gall



Mmm. As a test, replace the LED with a regular bulb. I say this because a bidirectional LED has a rectifier setup in it so that it works both ways, and one side of it could be bad. This would be a royal pain to try and sort out, versus just swapping in an incandescent. Again, this is just a test; if you swap out the LED for a regular one and it works, you know the wiring is good and you go on to replace the LED on whichever side.

-- A

[This message has been edited by dremu (edited 06-09-2019).]

pmbrunelle JUN 09, 09:38 PM
There are two grounds for the front lights, named G101 and G102.

If you open the front hood, and you remove the front headlamp assemblies, these grounds can be found on the sheetmetal in the area of the front sidemarkers.

LED stuff is weird; you should install all incandescent bulbs. Once the lights work correctly with incandescent bulbs, then re-introduce the LEDs one-by-one.
theogre JUN 10, 12:34 PM
Do what others said above to replace w/ normal 2057 bulbs.
Front Marker bulbs uses the "off" side of OE bulbs as ground path as shown in See my Cave, LED Marker Light and Sneak Path

Is very likely Cause by the LED.

Could be have iffy ground etc inside front sockets and/or LED is crap and have a problems.

Do Not follow BS you need added resistors. May seem to help but Eats More Power then 2057, 1157 and 2357 and Resistors get Hot fast.

Even ignoring LEDs are illegal for external fixtures, LEDs have other problems and most won't last long for automotive use for any number of reasons regardless of lifetime claims in whatever ad or web site.
Even LED that are OE from factory have problems and often Very Expensive to fix because have to replace Entire Fixture and most are Dealer Only parts.

------------------
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)

The Ogre's Fiero Cave

Reallybig JUN 10, 03:55 PM
I built LED strips into my side marker lights and had similar problems. I solved them by wiring in a tiny rectifier so it doesn't matter which wire is grounded to complete the marker/flasher circuit
theogre JUN 11, 01:59 PM

quote
Originally posted by Reallybig:

I built LED strips into my side marker lights and had similar problems. I solved them by wiring in a tiny rectifier so it doesn't matter which wire is grounded to complete the marker/flasher circuit

Is covered in marker link above. Some have this built in but most don't.
This works w/ normal park/turn bulb in front but LED park/turn, "switchback," and other types often causes problems even then.

And Do not use "Canbus" LEDs because the resistors get hot and often self destruct if your lucky that's all.
example Smokin' hot CANbus LED lamps. (230C in open air.) yt
Yannsky JUN 13, 06:08 AM
Hi

Thank you for your help

I will order regular bulb to test it as recommandes by Ogre and I will order your LED

Thank you
theogre JUN 13, 05:56 PM

quote
Originally posted by Yannsky:
I will order regular bulb to test it as recommandes by Ogre and I will order your LED

Order a bulb? Just go to any parts sore or any ___mart to get 2057 or 1157 in the car dept.