I got my new MK4 Leon Estate PHEV on Friday and hardwired in my Nextbase dashcam in yesterday. I thought I'd put on a quick guide as I couldn't see anything on the forums yet.
The is a UK car so steering wheel on the right.
First problem is that the manual says the fuses are by the steering wheel which is not true for UK cars. UK cars have the fuses behind the glovebox. To gain access you need to drop the box down and out of the way which was the most difficult part of the whole fitting. Basically the glovebox it is held in with a stay which is easy to remove when you know how and two side runners which are a pig.
First the stay on the right hand side of the glove box needs unclipping by pulling the very bottom towards you until it you feel it unclip and then pull it out of the socket.
Then the glovebox has a peg which locate in runners on either side which need freeing. There may be an easier way but the only way I could find to release them was to press in the plastic where the arrow is pointed and at the same time press the side of the glove box in. It took patience and a good deal of brute force. When they are both freed then the glove box can be dropped down to reveal the fuses.
Then I placed the fuse piggy back holder in position 66 which is the rear wash wipe and as such is ignition switched. The wire was then fed up in front of the fuses to where you can see it emerge in the next photo.
Next I pulled off the dash side panel which was simply clipped in. The earth spade was then attached behind the dashboard bolt circled above as this gives a good earth.
Next I put the camera unit in position and fed the cable behind the headlining and unclipped the A pillar cover partially and fed the cable behind. Finally I tied all the surplus cable together put all the excess into the handy void circled at the top before replacing the dash panel.
The result is a very neat installation with only a tiny bit of wire visible and the camera operates automatically when the ignition is switched on. It took about half an hour in total.
It would be easier if Seat fitted a USB C socket on the rear view mirror like Skoda do though.
Hope this helps someone.
The is a UK car so steering wheel on the right.
First problem is that the manual says the fuses are by the steering wheel which is not true for UK cars. UK cars have the fuses behind the glovebox. To gain access you need to drop the box down and out of the way which was the most difficult part of the whole fitting. Basically the glovebox it is held in with a stay which is easy to remove when you know how and two side runners which are a pig.
First the stay on the right hand side of the glove box needs unclipping by pulling the very bottom towards you until it you feel it unclip and then pull it out of the socket.
Then the glovebox has a peg which locate in runners on either side which need freeing. There may be an easier way but the only way I could find to release them was to press in the plastic where the arrow is pointed and at the same time press the side of the glove box in. It took patience and a good deal of brute force. When they are both freed then the glove box can be dropped down to reveal the fuses.
Then I placed the fuse piggy back holder in position 66 which is the rear wash wipe and as such is ignition switched. The wire was then fed up in front of the fuses to where you can see it emerge in the next photo.
Next I pulled off the dash side panel which was simply clipped in. The earth spade was then attached behind the dashboard bolt circled above as this gives a good earth.
Next I put the camera unit in position and fed the cable behind the headlining and unclipped the A pillar cover partially and fed the cable behind. Finally I tied all the surplus cable together put all the excess into the handy void circled at the top before replacing the dash panel.
The result is a very neat installation with only a tiny bit of wire visible and the camera operates automatically when the ignition is switched on. It took about half an hour in total.
It would be easier if Seat fitted a USB C socket on the rear view mirror like Skoda do though.
Hope this helps someone.
Attachments
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Fuse position.jpg
It's all fine now, either of the two bolts near the fuse box will work just fine 
