Tail light on the toy car in instrument panel

[Nick70d]

Today I installed the Led light Strip in the trunk of the model S, I tap the led to the driver side tail light ( led light I use max brightness) , I check all the lights after installed, everything works as expected and function. But I notice in the instrument panel, the driver side was dim ,
Can anyone tell me whats wrong?. Thanks alot

 

[rickyjb]

Today I installed the Led light Strip in the trunk of the model S, I tap the led to the driver side tail light ( led light I use max brightness) , I check all the lights after installed, everything works as expected and function. But I notice in the instrument panel, the driver side was dim ,
Can anyone tell me whats wrong?. Thanks alot

looks like the car thinks the light is not working , could be something software related, sensing different voltage to whats expected ?

 

[Nick70d]

Could be voltage relate? Bcuz the driver side I tapped with a 50 inches long LED strip and max brightness, maybe the LED draw too much voltage or amp ?

 

[Doanster1]

Whenever you tap a source, you’re presenting a different load on the line so the sensor and software are getting values they’re not expecting so the car graphic thinks the light is out. Are you getting a warning msg about the tail light being out?
What are you using this light strip for? Using it instead of the high mounted third brake light? If you need to tap a power source, use one that isn’t being monitored.

 

[airborne spoon]

there is a lot of random 12v lines in the car you should pick a different one for your LED strip. you can easily still use the brake or taillight as the on switch for it but for the power lead get that from else ware

 

[Nick70d]

Whenever you tap a source, you’re presenting a different load on the line so the sensor and software are getting values they’re not expecting so the car graphic thinks the light is out. Are you getting a warning msg about the tail light being out?
What are you using this light strip for? Using it instead of the high mounted third brake light? If you need to tap a power source, use one that isn’t being monitored.

The MCU did not give me any errors, the light strips I using just give extra light for the trunk, any power source i can tap whenever the car exterior lights on, its come on too, ??
Thanks for the help

 

[Nick70d]

there is a lot of random 12v lines in the car you should pick a different one for your LED strip. you can easily still use the brake or taillight as the on switch for it but for the power lead get that from else ware

Maybe the light trips using draw too much energy , lower the brightness of the led strips would help?? Thanks

 

[Doanster1]

Maybe the light trips using draw too much energy , lower the brightness of the led strips would help?? Thanks

No, it won’t help. The added load is there regardless of power draw, which is low already as they are LED vs incandescent.
What year is your car? My ‘14 had the wiring/connectors for adding trunk lights behind the carpet to either side of the latch hook. Exact same connector as the puddle lights.

 

[Nick70d]

No, it won’t help. The added load is there regardless of power draw, which is low already as they are LED vs incandescent.
What year is your car? My ‘14 had the wiring/connectors for adding trunk lights behind the carpet to either side of the latch hook. Exact same connector as the puddle lights.

Mine is 2015

 

[Doanster1]

Mine is 2015

So assume you don’t have any lights in the trunk at all like my car. Good news is that the wiring is already there to add two std lights that are identical to the rectangular puddle lights. Even the carpet is already pre-perforated to accept them. The wiring and connectors are taped to the existing bundle/loom behind the carpet. Even if you still want to use your LED bar/strip, use either side for power and you’re set. No errors or incorrect graphic on the IC because it’s just straight up pwr/gnd and not monitored.

 

[Nick70d]

So assume you don’t have any lights in the trunk at all like my car. Good news is that the wiring is already there to add two std lights that are identical to the rectangular puddle lights. Even the carpet is already pre-perforated to accept them. The wiring and connectors are taped to the existing bundle/loom behind the carpet. Even if you still want to use your LED bar/strip, use either side for power and you’re set. No errors or incorrect graphic on the IC because it’s just straight up pwr/gnd and not monitored.

Can you show me which wire color to tap ? Thanks

 

[Doanster1]

Can you show me which wire color to tap ? Thanks

Just std red/black. Remember if you don’t already have the lights in the trunk that the connector is fabric-taped to a wire bundle behind the carpet on each side.

 

[Nick70d]

Just std red/black. Remember if you don’t already have the lights in the trunk that the connector is fabric-taped to a wire bundle behind the carpet on each side.

Thanks I will try this weekend .

 

[Nick70d]

Just std red/black. Remember if you don’t already have the lights in the trunk that the connector is fabric-taped to a wire bundle behind the carpet on each side.

It works, thanks bro