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Old 03-07-2019, 06:22 PM   #11
autostaretx
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Default Re: Backup alarm toggle switch

I would hope ("it wishes were horses") that the Sprinter's logic was:
R-N-R : lower volume
R-N-F-N-R: keep volume high (or 'reset volume high')

... which, as Pharkas wrote, wouldn't be what you wanted in a campground.

--dick
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Get YOUR Sprinter's full configuration datacard by entering your VIN to https://www.datamb.com/
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Old 03-07-2019, 06:26 PM   #12
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Default Re: Backup alarm toggle switch

Brilliant Hein! Should be rigged into the back up and blind spot monitors. That would be simple.
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Old 03-07-2019, 06:27 PM   #13
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Default Re: Backup alarm toggle switch

Quote:
Originally Posted by Cheyenne View Post
In the UK it is illegal to sound a horn or warning device between the hours of 23:30 and 07:00 so the usual way is to have a defeat relay wired from the sidelights so the beeper cannot sound when the side lights are turned on, assuming of course you have the lights turned on as it's likely to be dark during those hours!

Keith.
Are Reversing Horns available for sale on UK Sprinters?
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Old 03-07-2019, 07:05 PM   #14
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Default Re: Backup alarm toggle switch

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Originally Posted by OrioN View Post
Are Reversing Horns available for sale on UK Sprinters?
Ahhh only when you pick the chauffeur-shofar option....

https://images.haarets.co.il/image/f...1018316866.jpg


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Old 03-07-2019, 07:11 PM   #15
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Default Re: Backup alarm toggle switch

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Originally Posted by Old Crows View Post
Ahhh only when you pick the chauffeur-shofar option....

https://images.haarets.co.il/image/f...1018316866.jpg


Oy vey!
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Old 03-08-2019, 07:07 AM   #16
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Default Re: Backup alarm toggle switch

I thought about wiring an on/off switch when I first got my van.

In the end I just unplugged the beeper.. I don't miss it.
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Old 07-11-2019, 10:23 PM   #17
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Default Re: Backup alarm toggle switch

I have 08 sprinter where is the fuse for backup alarm I want to turn it off
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Old 07-11-2019, 11:48 PM   #18
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Default Re: Backup alarm toggle switch

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Originally Posted by john thomas View Post
I have 08 sprinter where is the fuse for backup alarm I want to turn it off
I'm going to hazard the guess that there (effectively) isn't one.

The alarm is probably simply wired in parallel with the backup lights.

And the backup lights are powered by the fuse/relay block, which, in turn, gets its power from its primary 80 amp fuse. (yes: eighty).

Sources of wiring info:
http://www.diysprinter.co.uk/referen...nformation.pdf <-- 2007 service manual
http://www.diysprinter.co.uk/referen...nformation.pdf <-- MB wiring diagrams (sect 8W of above)
http://diysprinter.co.uk/reference/0...inter-2500.pdf <-- 3rd party wiring diagrams
... the backup light circuit is on Figure 26 of the 3rd party set, i didn't chase it down in the MB set
(and page 8w-51-3 through -6 in the MB set (i did chase it))

If you don't mind also losing the backup *lights*, then you could disconnect (or add a switch) the backup *switch* itself. Fig 26, or 8w-51-7 in the MB set.

At that point i'd find the beeper and unplug it.

--dick
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2005 T1N 118" Freightliner 2500 Passenger Wagon (2.7L, 15" tires, standard (short) roof)
Get YOUR Sprinter's full configuration datacard by entering your VIN to https://www.datamb.com/
http://diysprinter.co.uk/reference <-- lots of service documentation, Thanks to Jens Moller and Arnie_Oli
((as always: this post may go through a couple of post-posting edits... so maybe give it ten minutes before commenting))

Last edited by autostaretx; 07-11-2019 at 11:53 PM.
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