Member Since: 02 Dec 2020
Location: Southampton
Posts: 82
Discovery 4 2011 Radio Head unit wiring diagram
hi everyone
I am looking to fit a Sony Apple Carplay in my d4 but have been told the ISO lead i bought CT20LR04 is not the correct one for my car so thinking of slicing the wires and connect that way but i have been trying to find the wiring diagram for the wire that plug in to the head unit dont suppose anyone has these or can point me in the right direction
thankyou
2nd Feb 2022 11:52 am
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10683
So, out of interest, why isn't it the correct one?
2nd Feb 2022 12:17 pm
Dazzer34
Member Since: 02 Dec 2020
Location: Southampton
Posts: 82
Hi Pete
No Idea the guy i bought off from Ebay says it will not fit my car the correct one i need is £499
it is still in the post and fingers crossed it gets here tomorrow and i will try it out
i have the older sytem or display in my car not the big full size screen like the sat nav models have so this may be why so i thought i would search the internet for the wires to see if it can be connected that way
2nd Feb 2022 12:45 pm
Dazzer34
Member Since: 02 Dec 2020
Location: Southampton
Posts: 82
2nd Feb 2022 12:46 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10683
It’s usually the ones with the amp under the seat and/or colour display that require the
Expensive loom.
Wiring diagrams are on here somewhere
2nd Feb 2022 1:13 pm
Dazzer34
Member Since: 02 Dec 2020
Location: Southampton
Posts: 82
I hope it fits but will find out tomorrow
2nd Feb 2022 1:32 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10683
The one with 3 wires is for the aux jack I expect
2nd Feb 2022 4:55 pm
Dazzer34
Member Since: 02 Dec 2020
Location: Southampton
Posts: 82
I’m still trying to find the wiring diagram for these plugs but not having much luck
2nd Feb 2022 5:00 pm
Dazzer34
Member Since: 02 Dec 2020
Location: Southampton
Posts: 82
seriously cannot be this hard to find a wiring diagram
i will just wait now to see if this plug does fit when it turns up
who thought fitting aftermarket system would be so much of a headache
Member Since: 02 Dec 2020
Location: Southampton
Posts: 82
Thank you
3rd Feb 2022 12:18 am
Dazzer34
Member Since: 02 Dec 2020
Location: Southampton
Posts: 82
I have an update the connector works I have power etc but I have no sound can anyone help with this everything is connected as per instructions but no sound
3rd Feb 2022 12:28 pm
Bicycle repairman
Member Since: 18 Sep 2019
Location: Cumbria
Posts: 188
Do you have a amp under the drivers seat I have a lowlife GS no big screen but it does have a amp ?D4 GS let the retro fit begin
Heated steering wheel
Aftermarket TPMS
Double Din head unit satnav and TV
Reverse Camera
Cubby fridge
Door panel upgrade
Mood lighting
Digital Dash personalised
Back lit sun visors
4.5 Facelift front, rear and memory mirrors
Stainless bumper tread plate
6 pot Brembo conversion
HSE heated memory seats
Retro fit auto lights and wipers
LR 663 Defender alloys
275 45 20 GG AT3s
quarter of a D3
3rd Feb 2022 8:33 pm
Dazzer34
Member Since: 02 Dec 2020
Location: Southampton
Posts: 82
Hi yes I believe there is an amp I have found a bypass cable for the speakers but it’s listed for a D3 as can’t find anything for the D4 so going to contact them tomorrow to see if it’s the same
3rd Feb 2022 8:44 pm
Bicycle repairman
Member Since: 18 Sep 2019
Location: Cumbria
Posts: 188
so been looking at doing the same with mine but I think there has to be a remote wire coming from either the back of the cd unit or the number pad that fires up the amp when switched onD4 GS let the retro fit begin
Heated steering wheel
Aftermarket TPMS
Double Din head unit satnav and TV
Reverse Camera
Cubby fridge
Door panel upgrade
Mood lighting
Digital Dash personalised
Back lit sun visors
4.5 Facelift front, rear and memory mirrors
Stainless bumper tread plate
6 pot Brembo conversion
HSE heated memory seats
Retro fit auto lights and wipers
LR 663 Defender alloys
275 45 20 GG AT3s
quarter of a D3
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