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custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20626

Reverse camera trigger is reverse line live +
Purple / white trace.

It’s a good idea to fuse at about 100mA in-line just inside the vehicle from the reverse, so if there was a short you’d still keep your reverse light active, but protect downstream from there.

The light green is parking brake aka handbrake live + line trigger, for this a parking brake module is a good idea to avoid cutting into existing wiring.

The trigger for these things will be the ISO side that is primary power, speakers if used are on their own dedicated side for speakers only if used.

So ground, ignition, permanent 12v, illumination, 12v rmt blue/white, revere trigger, etc will be on the primary power side, the speakers are on the other side.

The cleanest signal you’ll get is RCA out though, not speakers, and those RCA lines then can go to a passive Amp set up, but that is a full external audio install.

You’ll normally only get upto 50wrms max per channel from the HU itself, and will run hotter, 30wrms to 50wrms is typical.

If you have a 2.2 Puma you can always manually retrofit DIN ISO connectors to match the 2.4, which cuts down adaptors needed, you can simply follow a generic wiring diagram and plugs, pins etc are readily available.
DIN ISO, is aftermarket industry standard, most cars have an adaptor you can that converts to this.
2.4 Puma has it as standard.

All you’d need is a basic uninsulated crimp tool, generic din iso wiring diagram, Male plugs DIN ISO, and pins.
You can use a plug and play adaptor, but you do have the little extra bulk of the housings, the female connectors have a bit more bulk to them. TheThunder Rolls🇬🇧🇺🇸
⛽️🛢️⚙️🧰💪

23rd Jan 2025 1:23pm

Baytown

Member Since: 30 Jan 2016
Location: Cairns Australia
Posts: 87

2012 Defender 110 V8 Petrol CSW Auto Blenheim Silver

Thanks for the in-depth reply Custom.

Re the Purple and white, nope, didn't do anything and isn’t labeled Camera or trigger, how ever the incorrectly coloured green and white trace did work. As per the attached photos, the loom doesn’t match the instruction diagrams.

Re the fuse, I always fuse immediately off any power supply. I’ll see if I can find the suitable connector block that the Rear Camera In RCA plug is connected to and only run that line to remove the extraneous audio cables, if not I’ll see if I can de pin the block vs cutting the lines. I live rurally so a definitive supply place in Cairns Australia is 100kms away.

Thanks again for the great reply.

Ken👍

Click image to enlarge

Click image to enlarge 2012 110 LS3 6.2 V8 - 6 Speed Auto

23rd Jan 2025 11:25pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20626

I see what you mean, it might be the I.D. Heatshrink / tag has been put on the wrong wire colour when made, and then put in the wrong pin housing on the block.
Then they matched the tag to the pin location but not the wire colour.

You can get keys to unpin, that is what I’d do too, what a pain.
If you can heat the shrink you can likely slide it off, if it’s adhesive a bit more tricky, worse case very carefully slit it along its length, put it where it should be and a little clear over the top to keep it in place.
Or a PVC adhesive electrical tape, fashioned into a flag, and you can write on it with a sharpie.

TheThunder Rolls🇬🇧🇺🇸
⛽️🛢️⚙️🧰💪

24th Jan 2025 6:43pm

Baytown

Member Since: 30 Jan 2016
Location: Cairns Australia
Posts: 87

Good on you mate, I’ve a Dymo that I can label with and routinely mark my cables with. I should invest in a heat shrink labeller, that would be great. I’ve a set of de pinning keys - pins here so will see if they're suitable, although its a pretty small pin access.

I’ll post what my outcome is.👍 2012 110 LS3 6.2 V8 - 6 Speed Auto

25th Jan 2025 12:15am

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20626

TheThunder Rolls🇬🇧🇺🇸
⛽️🛢️⚙️🧰💪

25th Jan 2025 6:49pm

Baytown

Member Since: 30 Jan 2016
Location: Cairns Australia
Posts: 87

I de pinned the connector

As discussed, I de pinned the speaker connector so that only the ‘Camera In’ line is connected vs the spaghetti mess involved with connecting the cable with the un needed RCA plugs and three other cables.

Removing the individual cables was easier than expected, just requiring lifting the tiny plastic tabs and pulling the cables out. Best part is it should be easy to reassemble the loom if needed in the future should I fit an external amp. That will make the cable clutter behind the AV unit a little easier to manage.👍

Click image to enlarge

Click image to enlarge 2012 110 LS3 6.2 V8 - 6 Speed Auto

29th Jan 2025 4:40am

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20626

Good work.

Yes, reducing bulk of wiring behind there is a good idea, also any longer wires, it’s a good idea to secure and protect them within reason so they don’t get stuck in or around the heater controls as they can get jammed up, not only stop them being operated but damaging the wires too. TheThunder Rolls🇬🇧🇺🇸
⛽️🛢️⚙️🧰💪

29th Jan 2025 6:44pm

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