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Head unit dosnt power off when key taken out of ignition

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hey i fitted my single din lg head unit it to my skoda fabia 2 i brought all the adaptors and facia for my car but when i take the key out of the ignition it carrys on playing help please lol any suggestions

i have now taken it out and put the original dance hu back in

thanks in advance

Not 100% sure if it is the same on your car but on older models the permanent and ignition wires(red and yellow) need to be swapped on aftermarket head units

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Not 100% sure if it is the same on your car but on older models the permanent and ignition wires(red and yellow) need to be swapped on aftermarket head units

Hey thank you

Do you mean link the read and yellow together or change the slots that they sit in?

You have to swap them over, do not link them.

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You have to swap them over, do not link them.

cheers will try sunday

The Fabia 2 doesn't have a switched +12V to the back of the radio, just a permanent +12V and a signal bus from the computer to tell the radio when to switch on and off. This is different from the Mk1 Fabias. I finished up running my own switched +12V line from the back of the fusebox, from one of the spare sockets, to the back of my aftermarket JVC DAB radio. I'll need to do some digging but you can buy the correct termination for this wire from (details missing; I'll let you know) and it pushed in to the back of the fuse box on the bottom RH corner (there are several switched un-used sockets down there; they're easy to find with a voltmeter and patience). You might need to take the fuse box out and have it dangle by the harness to get behind there though. It's a fiddle, but it's good to do it properly. Once I had the connector I did mine in a Saturday morning without breaking a sweat.

Good luck.

This does mean, however, that you only get radio when the ignition is actually on. It no longer stays on once you've switched the ignition off but left the key in. That level of function is now performed by the digital bus.

  • Author

The Fabia 2 doesn't have a switched +12V to the back of the radio, just a permanent +12V and a signal bus from the computer to tell the radio when to switch on and off. This is different from the Mk1 Fabias. I finished up running my own switched +12V line from the back of the fusebox, from one of the spare sockets, to the back of my aftermarket JVC DAB radio. I'll need to do some digging but you can buy the correct termination for this wire from (details missing; I'll let you know) and it pushed in to the back of the fuse box on the bottom RH corner (there are several switched un-used sockets down there; they're easy to find with a voltmeter and patience). You might need to take the fuse box out and have it dangle by the harness to get behind there though. It's a fiddle, but it's good to do it properly. Once I had the connector I did mine in a Saturday morning without breaking a sweat.

Good luck.

This does mean, however, that you only get radio when the ignition is actually on. It no longer stays on once you've switched the ignition off but left the key in. That level of function is now performed by the digital bus.

thank you that would be great if you could let me know and as for it not staying on i would rather that then it staying on permently lol thanks for the help and will look in to doing it

Found it. The Golf TDI Club forum has been very helpful in this respect. Have a look at: http://forums.tdiclub.com/showthread.php?t=245319. I finished up buying the 3-7212 terminal from www.vehicle-wiring-products.eu. You then need a new fuse and you'll still need to wire in the permanent +12v to the radio to stop it losing its memory every time you switch off (pardon if any of this is obvious).

It's nice to see a job well done. Death to the Scotchloks.

M

  • Author

Found it. The Golf TDI Club forum has been very helpful in this respect. Have a look at: http://forums.tdiclu...ad.php?t=245319. I finished up buying the 3-7212 terminal from www.vehicle-wiring-products.eu. You then need a new fuse and you'll still need to wire in the permanent +12v to the radio to stop it losing its memory every time you switch off (pardon if any of this is obvious).

It's nice to see a job well done. Death to the Scotchloks.

M

hey thank you so if i buy the 3-7212 i guess i plug that into the skoda wireing harness ?? with the cable in the fuse box? and keep the perm connected still? also what type of cable did you use? and what fuse size? sorry for all questions just dont wanna do anything wong lol many thanks steven

Edited by Skoda fabia 2 1.4tdi

In the bottom RH corner of the fuse box, there are several empty slots where fuses can go. Switched +12V is fed to the fuse socket on one side of where a fuse is inserted, the other side is empty. You can find the 12V by using a meter to detect the 12V when ignition is on and not when it's off. There are 3 or 4 of these, so pick one that will become your fused switched 12V supply.

Take one of the aforementioned terminals and crimp it on to a medium-sized wire (2.5mm2 is plenty big enough for most radios). A proper crimp tool will make it easy to do and give you a reliable connection. Most car electrical shops can guide you on this.

Now remove the fusebox. You need to get into the footwell, remove the foam sound insulator and undo the screws holding it in. It's a bit of a tight fit to get out, particularly because there's a huge cable harness going into one end. Go steady as you don't want to dislodge any wires. I've probably missed some details here but it's been months since I did this.

You should now be able to see the empty hole that will take your terminated wire. It will only go in one way and you'll find the right way by trial and error. Push it in until it clicks into place.

Run the new cable up through the guts of the dashboard and bring it out into the space behind the radio. It's a good idea to tie-wrap it to convenient points along the way, and make sure there's generous slack along the way.

Re-fit the fusebox. Insert a new fuse appropriate for the radio into where you've just put the new terminal in the fuse box. Check that the free end of the new wire isn't touching anything, turn on the ignition and check you've got 12V at the end of the new wire. Check it goes off when you switch the ignition off.

All you need to do now is terminate this new wire appropriately to fit into whatever connector goes into the back of the radio, push the termination into the connector housing and plug that back into the radio and, as the say in France, Fanny's your aunt.

Hope this helps.

M

I had the same problem while fitting my Chinese after market HU. I sorted this issue by pulling out a line from one of the Fuses (named "KL30") from a panel that is right under the steering wheel. I connected this line to my after market's Memory Wire (RED Wire) and now the HU works perfectly and does not drain the Battery by keeping ON. It now goes OFF when I lock the Car even if it was turned ON before doing so.

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