Hi everyone. I bought a great pair of electric seats from this model to fit in a camper van conversion I’m building. Found an L494 wiring diagram on line to help connect it all up but none of the colours seem to match my wires in the connector below the seat. Possibly the diagram is for pre 2017 model.

I have tried connecting various black wires to battery - terminal (as the diagram I have does indicate they are all earth connections) and various coloured power wires (the thicker ones In red, purple/red and brown/white) to + terminal, via a fuse in case I got it badly wrong, but no life so far with the seat switches. Various small ‘logic’ cables are there but I am a bit lost with those.

I’m really keen to get the main controls working to slide the seat forwards/back, and height and reclining adjustments. Don’t need / want airbag going off(!) and less concerned about seat heating etc at this stage. Are there any electrical experts out there who can help please? Or does anyone have a relevant seat wiring diagram please?

‘Power’ wires

The style of the seats I’ve bought - Range Rover Sport 2018 model

 

Hey, did you manage to get anywhere with this ? Im looking to do the same but with a transit custom

 

No, nothing yet. Put it on hold while I worked on easier parts of the conversion. Just starting to look at it again this week. If I get anything I'll let you know. Perhaps you could the same if you have any luck?

 

Will do.
I just sold my 2018 RRS and the seats were the most comfortable I've ever had, so I bought one for the van. Did a cursory check under the seat before mine went, thinking it would be easy but wish I had done more now while I had the car on the drive !

 

Just to update, I still haven’t fathomed out the wiring system to get the seats fully functioning however I have managed to bodge up a method to get the seat sliding forwards or backwards electrically. There are two thicker Wires going to the motor which drives the seat. One is blue and white the other yellow and green I think. I connected wires in to these using the blue snap on connectors you can buy in a car accessory shop. Connecting these wires to the positive and negative of a 12 V battery drive the seat forwards and backwards depending which way you connect them. It has at least solved my urgent problem which was to move the passenger seat so I could make it swivel round.


By the way I managed to get swivel bases from swivel-seats.com. It’s a uk company called Jennings seats and a guy there called George was very helpful in coming up with a suggestion for swivels which I could modify slightly to adapt the range Rover seats to VW Crafter bases.

 

I got them fully working but bypassed the module and seat controls conpletely

i used the wiring diagram to trace out the wires and connected each to a 3 way switch with reversing polarity
connected the lumbar pump to ground and 3 switches “activate” the lumbar directions
all fed from an overriding switch to disconnect power when not adjusting

at the moment it isn’t pretty but it’s all working
im going to see if I can get a switch pack and take it to bits to try and wire that but I suspect it’s all circuit board and chip so won’t be easy

 

Hi Simonbradbury, I’m trying to do the same with relays, but struggling to get any motors to work. Can you share how you wired these up please? Thanks Jason

 

You have to wire directly to the motor with a three position switch and reverse the polarity on direction change. so the two wires will be negative and positive when the switch is depressed one way and reverse polarity when pressed the other way
you have to have direct power and ground to each motor

 

I’m in the USA at the moment and won’t be back until at least 26th, I’ll take a picture or two when I get home

 

Thanks, any help with pictures/diagrams would be much appreciated. Safe travels back from the US.