3rd Brake Light wire
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Joined: Feb 2020
Posts: 34
Likes: 6
2025 GLE 53 AMG Coupe
3rd Brake Light wire
I am looking to power a center brake light in my diffuser and would appreciate any help with info on where in the passenger compartment I might find the wire that powers the brake light that is above the rear windscreen.
I can’t do it from the left and right taillights as they are coupled with the indicator.
Any help would be greatly appreciated.
I can’t do it from the left and right taillights as they are coupled with the indicator.
Any help would be greatly appreciated.
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'13 GLK350 4matic,'10 C207,'15 GLA250,'07 Honda Odyssey, '18 GLE 43, '24 EQS 580
I am looking to power a center brake light in my diffuser and would appreciate any help with info on where in the passenger compartment I might find the wire that powers the brake light that is above the rear windscreen.
I can’t do it from the left and right taillights as they are coupled with the indicator.
Any help would be greatly appreciated.
I can’t do it from the left and right taillights as they are coupled with the indicator.
Any help would be greatly appreciated.
MBWorld Fanatic!
Joined: Jul 2003
Posts: 6,783
Likes: 1,274
From: Lake Oswego, OR
2020 GLE 450; 2023 BMW M2 Coupe
I am looking to power a center brake light in my diffuser and would appreciate any help with info on where in the passenger compartment I might find the wire that powers the brake light that is above the rear windscreen.
I can’t do it from the left and right taillights as they are coupled with the indicator.
Any help would be greatly appreciated.
I can’t do it from the left and right taillights as they are coupled with the indicator.
Any help would be greatly appreciated.
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Joined: Oct 2009
Posts: 7,066
Likes: 2,219
From: Colorado
'21 AMG53 wDPP & ARC, 19 GLC300 - Former-03 C240,2 ML BlueTecs,20 GLE450 E-ABC,15 Cayenne D,17 Macan
MBWorld Fanatic!
Joined: Jul 2003
Posts: 6,783
Likes: 1,274
From: Lake Oswego, OR
2020 GLE 450; 2023 BMW M2 Coupe
Thread Starter
Junior Member
Joined: Feb 2020
Posts: 34
Likes: 6
2025 GLE 53 AMG Coupe
I am looking to power the light in the diffuser.
The trailer hitch was my first thought but found out that they are a bit more intelligent than earlier models (ML) where in current models the signals are only present after a trailer is connected and detected by the vehicle and also certain features like, parking sensors, etc. are disabled. That's a bit too much, all I am looking to do is power the light in the diffuser. For US model 167s it seems like the 3rd brake lamp is the only place where an isolated signal occurs only when the brake pedal is pressed.
I was just hoping to find out the routing of the wire to the 3rd brake light in the cabin of the car so as to tap into it and avoid accessing it from the hatch and dealing with hinges and routing it back to the rear bumper.
MBWorld Fanatic!
Joined: Oct 2009
Posts: 7,066
Likes: 2,219
From: Colorado
'21 AMG53 wDPP & ARC, 19 GLC300 - Former-03 C240,2 ML BlueTecs,20 GLE450 E-ABC,15 Cayenne D,17 Macan
Would this or a comparable product work?
https://www.etrailer.com/Hitch-Cover.../CR-007XL.html
Edit 1: There are many more stylish offerings on the web.
Edit 2: The comment that the newer brake/turn signal circuits not responding when tapped into, is correct when running LED bulbs.
The car needs to see a load in order to recognize the device. LED bulbs don't provide enough load, so no current flows
Two probable solutions of you want to use the 7 pin source.. First, introduce a resistor into th circuit to provide the needed load.
OR use a device that has incandescent bulbs.
https://www.etrailer.com/Hitch-Cover.../CR-007XL.html
Edit 1: There are many more stylish offerings on the web.
Edit 2: The comment that the newer brake/turn signal circuits not responding when tapped into, is correct when running LED bulbs.
The car needs to see a load in order to recognize the device. LED bulbs don't provide enough load, so no current flows
Two probable solutions of you want to use the 7 pin source.. First, introduce a resistor into th circuit to provide the needed load.
OR use a device that has incandescent bulbs.
Last edited by mikapen; Apr 12, 2023 at 01:10 PM.
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Joined: Jan 2023
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GLE 580
I am looking to power the light in the diffuser.
The trailer hitch was my first thought but found out that they are a bit more intelligent than earlier models (ML) where in current models the signals are only present after a trailer is connected and detected by the vehicle and also certain features like, parking sensors, etc. are disabled. That's a bit too much, all I am looking to do is power the light in the diffuser. For US model 167s it seems like the 3rd brake lamp is the only place where an isolated signal occurs only when the brake pedal is pressed.
I was just hoping to find out the routing of the wire to the 3rd brake light in the cabin of the car so as to tap into it and avoid accessing it from the hatch and dealing with hinges and routing it back to the rear bumper.
Last edited by wildta; May 15, 2023 at 01:37 PM.
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