I will also purchase the wiring harness with it, but have no idea what it includes.
I am clueless when it comes to electrics so can someone please let me know exactly what I need to buy to have this wired up to come on with the high beam and also have a switch installed?
I will have someone to help me fit it, but I want to make sure I have everything I need to fit without having to get halfway through and realise I need to go and buy something else.
I have a 2015 D4 in the UK.
Any help is always greatly appreciated, thank you!
EDIT: Apologies, I've put this in the D3 section instead of D4, Admins feel free to move it if needed. Thanks
Daniel
30th Jan 2024 1:14 pm
Davethegeo
Member Since: 01 Oct 2015
Location: Edinburgh
Posts: 879
It doesn't look like the bit of wiring included in that kit is really what one would call a wiring harness. A harness for auxiliary lights should include at least a fuse, switch, relay and decent cable and connectors to connect to your battery and a feed for high beam.
Search for "Stedi" or "lightbar" on the forum and you will find some useful pages. I fitted a Stedi ST1K just over two years ago and I'm very pleased with it.D1 300Tdi - gone
D2 Td5 ES (Alive remapped...mmm) - sadly gone
D4 2012 SDV6 XS - Stolen
D4 2014 SDV6 HSE - Shiny
30th Jan 2024 4:06 pm
HairyFool
Member Since: 04 Jan 2023
Location: Essex
Posts: 526
Even with "low power" LEDs the supply should be fed via a fuse from a relay, not a great deal of difference between most you can buy on line.
Terminal codes are:
85 Coil
86 Coil
87 Normally Open (NO)
87a Normally Closed (NC) - not present on 4 pin relays
30 Common connection to NO & NC terminals
The coil is not polarity sensitive, one terminal fed from a tap off of the headlamp circuit but must be 12v. The other side of the coil has the switch linking down to ground.A visitor from the dark side, my other vehicle is an MG5 EV
30th Jan 2024 5:31 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10365
How do you select the different colours and modes.
Keep turning off and on?
30th Jan 2024 6:41 pm
Danwalk201
Member Since: 28 Aug 2023
Location: Telford
Posts: 4
I have no idea, I'm waiting for them to get back to me so I can ask them about it
30th Jan 2024 9:08 pm
Danwalk201
Member Since: 28 Aug 2023
Location: Telford
Posts: 4
Davethegeo wrote:
It doesn't look like the bit of wiring included in that kit is really what one would call a wiring harness. A harness for auxiliary lights should include at least a fuse, switch, relay and decent cable and connectors to connect to your battery and a feed for high beam.
Search for "Stedi" or "lightbar" on the forum and you will find some useful pages. I fitted a Stedi ST1K just over two years ago and I'm very pleased with it.
Thanks for the help, I was hoping someone could point me in the direction of what I'll need in terms of fuses, relays etc as I have no idea what will actually be required. I've had a look at some other posts but there isn't really a clear answer.
30th Jan 2024 9:16 pm
KevinD3
Member Since: 05 Aug 2020
Location: Sutton Coldfield
Posts: 1207
Either pre-made or make it up yourself, you need the fuse for protection and obviously a switch to turn them on
There’s a lot of debate been had around whether you can just wire them to your high beams or whether they should be independently switched, I’m with the latter, as you may not want to blind an oncoming driver every time you flash them to come at a junction.2008 HSE Stornoway Grey
My Wife thinks the D3 is a hobby, The D3 thinks the wife is 💕
30th Jan 2024 11:39 pm
HairyFool
Member Since: 04 Jan 2023
Location: Essex
Posts: 526
Purely from looking at the photos I'm not sure these will work as you want.
The loom appears to be a 4 pole DT04 male-female lead. 2 pins pass through and 2 tap off to the yellow and white lead.
The pass through is heavier wire so most likely the power feed. The yellow/white lead would then be for a switch, probably a push to make button that each time you press it steps through the 3 light modes and off.
Still using a relay it would be possible to turn on with the main beams but it might remember the last mode used or always turn on in one specific mode.
The DT04 connector kits are available from eBay, £6 for the single 4 way plugA visitor from the dark side, my other vehicle is an MG5 EV
31st Jan 2024 1:10 am
Danwalk201
Member Since: 28 Aug 2023
Location: Telford
Posts: 4
Either pre-made or make it up yourself, you need the fuse for protection and obviously a switch to turn them on
There’s a lot of debate been had around whether you can just wire them to your high beams or whether they should be independently switched, I’m with the latter, as you may not want to blind an oncoming driver every time you flash them to come at a junction.
Thanks Kevin That's really helpful and will take a look.
Quote:
Purely from looking at the photos I'm not sure these will work as you want.
The loom appears to be a 4 pole DT04 male-female lead. 2 pins pass through and 2 tap off to the yellow and white lead.
The pass through is heavier wire so most likely the power feed. The yellow/white lead would then be for a switch, probably a push to make button that each time you press it steps through the 3 light modes and off.
Still using a relay it would be possible to turn on with the main beams but it might remember the last mode used or always turn on in one specific mode.
The DT04 connector kits are available from eBay, £6 for the single 4 way plug
I've spoken to their support and they have said the below:
Quote:
The package will come with the DT conversion cable
You can connect the yellow wire and white wire separately to your daytime running lights or signal lights, then you can control them separately with the daytime running lights or signal lights
Is this possible with regard to wiring up to the DRL? I'm not fussed about the Indicators. It looks like it comes with a DT conversation kit so won't need to buy one of those.
1st Feb 2024 3:21 pm
Davethegeo
Member Since: 01 Oct 2015
Location: Edinburgh
Posts: 879
I'm not sure what a DT conversion cable is, but in any case, you will just use the high beam lights to switch a relay which will then in turn switch on your shiny new LED lightbar.
The existing highbeam wiring will not be enough to power both the highbeams AND your lightbar hence the need for the lightbar to have its own power supply. I take power for my lightbar from the Stop Start battery.
If you connect the lightbar in parallel with the highbeam then at the very least, you will blow the highbeam fuse. At worst you will melt cables and burn out switches.
There are lots of posts on this forum about wiring in spotlights and driving lights so do have a read of them. Wouldn't want you to damage your existing wiring.D1 300Tdi - gone
D2 Td5 ES (Alive remapped...mmm) - sadly gone
D4 2012 SDV6 XS - Stolen
D4 2014 SDV6 HSE - Shiny
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That's really helpful and will take a look.
