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Co1

Member Since: 19 Aug 2018
Location: North Yorkshire
Posts: 3681

Alpine Double Din to optimill reverse camera set up help

I’ve got power to the camera, and continuity on the signal cable however I get no image on the screen. If I select reverse, I’m getting 12V on the reverse signal cable but nothing happens at the head unit. If I press the Cam button on the head unit it just makes a bong noise and still no image. Any thoughts?

Can anyone confirm which pin the reverse signal is supposed to go into on the connector on the back of the HU?

13th Aug 2022 12:30pm

Angus_Beef

Member Since: 30 Apr 2015
Location: Oslo
Posts: 434

2015 Defender 110 Puma 2.2 SW Corris Grey

Check the head unit wire that grounds to the handbrake switch Roaming around 🇳🇴🇨🇭

13th Aug 2022 3:01pm

Co1

Member Since: 19 Aug 2018
Location: North Yorkshire
Posts: 3681

Cheers Angus. Can you expand on that? I haven’t got the handbrake wire wired up, is this a necessity? Is there a workaround to save me having to run more wires in?

Cheers
Col

13th Aug 2022 3:08pm

Angus_Beef

Member Since: 30 Apr 2015
Location: Oslo
Posts: 434

I have the JVC that mud sells and it has a wire to connect to a handbrake that needed to be grounded before the camera would work. I grounded this wire to the unit instead of hooking it to the switch because I wanted everything to work regardless of parking brake position .

I’m not sure if your particular unit is the same, but with mine the camera did not work with that particular line not connected to a ground Roaming around 🇳🇴🇨🇭

13th Aug 2022 3:25pm

Co1

Member Since: 19 Aug 2018
Location: North Yorkshire
Posts: 3681

Cheers Angus, I’ll give it a go.

13th Aug 2022 3:26pm

Co1

Member Since: 19 Aug 2018
Location: North Yorkshire
Posts: 3681

Sorry, just to clarify, all I need to do is connect that wire to ground?

13th Aug 2022 3:28pm

Angus_Beef

Member Since: 30 Apr 2015
Location: Oslo
Posts: 434

Well I don’t have the alpine unit so I can’t say for certain. But in your trouble shooting, check to see if there is a line for the parking brake, and what signal the unit expects on that line Roaming around 🇳🇴🇨🇭

13th Aug 2022 3:40pm

Co1

Member Since: 19 Aug 2018
Location: North Yorkshire
Posts: 3681

There is a parking brake line, but not sure whether it wants 12V or 0V. I tried grounding it to no avail. Worth connect it to 12V or do I risk booting something?

13th Aug 2022 3:43pm

MichaelE

Member Since: 18 Jan 2020
Location: Crawley West Sussex
Posts: 155

Not saying this will fix your problem but you may want to do an Ebay search for "parking brake override bypass". You'll find them for a range of units and Alpine are amongst them. It allows access to menu items that are unavailable if the unit does not get a handbrake on ground signal.

13th Aug 2022 3:43pm

Co1

Member Since: 19 Aug 2018
Location: North Yorkshire
Posts: 3681

Problem solved. Turns out you have to enable the camera in settings!!!!

13th Aug 2022 3:52pm

Angus_Beef

Member Since: 30 Apr 2015
Location: Oslo
Posts: 434

Good result!! Roaming around 🇳🇴🇨🇭

13th Aug 2022 5:42pm

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