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Accessory power

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Old Aug 3, 2021 | 09:29 PM
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Mercedesfla007
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GLS 450 2021
Accessory power
I’ve been told by a car shop that the fuse box in the back doesn’t have accessory power and only has constant power. He said pin 430 and 431 is constant power for trailer and I should have the Mercedes dealer allow accessory power on those slots. Has anyone heard of this? He was trying to hook up some screens to the back fuse box…
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Old Aug 4, 2021 | 01:03 AM
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2012 E350, 2020 GLS450
Accessory power as in power only when the engine is on? If thats the case they definitely have it because I have my dashcam system hooked on at the back and it needs ACC to charge my backup battery. You will need to look at the fuse diagram (somewhere in this forum)
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