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Issue after LED foglight install

Scuderi

Well-Known Member
382
93
Maryland
Vehicle Model
Civic Si
Body Style
Coupe
Hi guys. So today I replaced my foglight with LED bulbs in the OEM housing as from what I've heard that is okay. Installation went great, bulbs light up bright. However, since install, when I lock car ('14 si coupe), it no longer makes the chirp/beep noise. Also, when I start my car, the foglight flicker. I will attach a video that shows the foglight flicker. Thank you!

Video: View: https://youtu.be/LnfUXEVHUJg
 

webby

Administrator
Admin
Toys For Tots
52,424
22,495
under the hood fuse panel - check #18 which is the horn. It's a 10amp fuse. See if it's popped.
#18 Horn 10A

I also wouldn't be starting the car with all of your lights running. You'll pulling unnecessary draw to all of those accessories while the engine is trying to crank.
 

Scuderi

Well-Known Member
382
93
Maryland
Vehicle Model
Civic Si
Body Style
Coupe
Turn out my trunk was open that's why it wasn't beeping lol. My lights are set to auto that's why they were on, do you turn on your lights manually?
 

Michal006

Well-Known Member
9,565
4,674
PA
Vehicle Model
Tacoma TRD Sport 4x4 6MT
Body Style
Access Cab
I turn on my lights manually.
 

Nix

Jötunn Moderator
10,765
8,162
Lew-vul, KY
Body Style
It's A Fast Pig!
Some type of CANBUS system monitoring the amp/watt draw and acting weird accordingly. How do you have them wired up? Are you running a separate wiring harness? Even an HID harness could be adapted to use the stock input signal and run power straight from the battery. I bet a relay setup would bypass all the factory checks and restore the electrical functions you are missing. LEDs have been an issue in several places. Most notably in turn signals and needing to run resistors to function properly. I bet its some weird gremlin like that.
 

Scuderi

Well-Known Member
382
93
Maryland
Vehicle Model
Civic Si
Body Style
Coupe
I have no harness or anything. I just replaced the halogen bulb with an LED one. Someone told me only way to fix it is a relay harness. Is that correct? I know nothing about wiring/electrical lol
 

ADExternal

Lvl: 99 Modifier
1,917
1,535
Houston, Tx
Vehicle Model
Civic Ex
Body Style
Coupe
I have no harness or anything. I just replaced the halogen bulb with an LED one. Someone told me only way to fix it is a relay harness. Is that correct? I know nothing about wiring/electrical lol

Technically yes, because the harness will draw power directly from the battery using the fog power as a switch to the relay. All lights in cars flicker if not turned off when the battery turns on the engine, its common to direct all power to the starter for cranking amps.
 

Scuderi

Well-Known Member
382
93
Maryland
Vehicle Model
Civic Si
Body Style
Coupe
Does that require cutting wires or is it kind of plug n play?
 

JonnyRotten

Well-Known Member
1,673
771
Mississauga, Ontario, Canada
Vehicle Model
Civic Si
Body Style
coupe
I also wouldn't be starting the car with all of your lights running. You'll pulling unnecessary draw to all of those accessories while the engine is trying to crank.

My lights are set to auto that's why they were on, do you turn on your lights manually?

I turn on my lights manually.

I just leave my light set to auto. That way I know my lights will be on when needed and I won't be one of those people driving down the road without any light on.
 

Bulkybear

Well-Known Member
1,665
749
It looks like you left your lights set to on instead of auto. They still shut off when you close your door with the engine off. My auto lights don't come until the car is started. Yours came in when you unlocked the car. And that's common for led lights to do that when starting. All lights do that. It's just with regular bulbs they dim instead of flicker. It's because normal lights dim when voltage drops. Led and hid lights are either on or off. Voltage drops too much they turn off.
 
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