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Reverse light trigger
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Phoebus89
 


Member Since: 02 Jan 2019
Location: Doncaster
Posts: 18

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Zermatt SilverDiscovery 3
Reverse light trigger

Anyone know of a reverse light trigger wire up near the dash anywhere before I go searching? Thanks!
  
Post #206460528th Jun 2019 12:50 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 4740

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

There are 2 reverse light fuses. Behind glovebox

You could use a piggy back fuse off them

Or on rear view mirror

What’s it for?
  
Post #206466928th Jun 2019 3:39 pm
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loanrangie
 


Member Since: 18 Jun 2017
Location: Melbourne
Posts: 58

Australia 2008 Discovery 3 TDV6 SE Auto Stornoway GreyDiscovery 3

There is a trigger in the stereo loom that i used for the reverse camera, i updated the head unit and the adapter harness has a wire specifically for this.
Its the purple wire in this pic and will correlate to a wire in the factory loom.

Click image to enlarge
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Post #206884617th Jul 2019 4:38 am
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 4740

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

The factory disco connector won’t have it though.
  
Post #206891017th Jul 2019 10:35 am
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Martin
Site Admin and Owner 


Member Since: 06 Nov 2004
Location: Hook Norton
Posts: 17521

Wales 2006 Discovery 3 TDV6 SE Manual Buckingham BlueDiscovery 3

Correct, the reverse signal is transmitted on the CAN bus (on both auto and manual)

The CJB reads the CAN message and switches on the reverse lamps using an internal relay feeding out through Fuse 5.

That Connects2 unit must read the message from CAN and generate the hardwire signal on its purple/white wire. You can see the twisted pair of wires for the CAN bus going into the Connects2 module.
 06 D3 SE / 15 LR D90 XS SW / 88 LR 90 Td5 / 68 BMW 2000 ti
Any issues with the site let me know! 
 
Post #206891817th Jul 2019 11:06 am
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