PeachParts Mercedes-Benz Forum - Any constant 12V power source in the trunk W124 Cabrio?

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atikovi

11-20-2019 12:31 PM

Any constant 12V power source in the trunk W124 Cabrio?

Either in the trunk or under the rear seat. Need it for the beeper on the remote keyless entry I'm installing. Would rather not run a wire all the way to the fuse box under the hood.

party

11-20-2019 03:13 PM

The beep output from the keyless unit should be all the power the beeper needs.

atikovi

11-20-2019 03:26 PM

Quote:

Originally Posted by party (Post 3978737)

The beep output from the keyless unit should be all the power the beeper needs.

The beep output is to ground so I need a constant 12V+ to the buzzer.

party

11-20-2019 03:36 PM

That's ****ty. Most that I've seen put out 12V+ with sufficient amps to power a piezo buzzer. It's there a second light flash output you can use?

atikovi

11-20-2019 03:57 PM

Wiring diagram
http://www.fototime.com/ACCA0F97297626B/large.jpg

The purple 10 pin goes to the parking lights and the pink 5 pin goes to the buzzer negative wire. Not using the horn or a relay.

Mxfrank

11-20-2019 05:43 PM

Any car of that generation will have an unswitched 12V+ connection to the automatic antenna.

atikovi

11-20-2019 06:56 PM

Thanks, I'll check.

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