GolfGTIforum.co.uk

General => Car audio => Topic started by: mk3valver on 07 April 2011, 13:13

Title: New power for my headunit??
Post by: mk3valver on 07 April 2011, 13:13
Somehow whilst trying to fit an aerial amplifier I have lost the power to my headunit?! Firstly I noticed it had gone with the ignition on but when I turned it off the stereo came on? My mechanic has told me to take power from somewhere else. Has anyone got any ideas as to where from though or any other fixes?

 Thanks in advance, Matt
Title: Re: New power for my headunit??
Post by: Len on 07 April 2011, 13:32
Had a similar problem with mine a long time back!
Think all we did was swap the live and remote wires. Just means HU is permanently live.
Title: Re: New power for my headunit??
Post by: mk3valver on 07 April 2011, 13:44
Right I'll go and have a pop now, thanks
Title: Re: New power for my headunit??
Post by: mk3valver on 07 April 2011, 14:13
It's not even coming on when the ignitions off now, it does make a noise like the cd's ejecting but no lights or owt?
Title: Re: New power for my headunit??
Post by: trog_nfs on 07 April 2011, 14:35
sounds like you ignition live might be knackered. Get a multimeter on the ignition feed and if its 0 V, theres your answer.

Temp measure would be wire it up permanently - attach red and yellow wires to permanent live.

Proper fix would be new ignition switch
Title: Re: New power for my headunit??
Post by: mk3valver on 07 April 2011, 15:36
No thats not working either, any other ideas?
Title: Re: New power for my headunit??
Post by: Len on 07 April 2011, 16:54
Might have to take a new wire direct from the battery then or from the fuse box.
Title: Re: New power for my headunit??
Post by: trog_nfs on 07 April 2011, 17:09
You haven't blown a fuse or something silly like that have you?  :laugh:
Title: Re: New power for my headunit??
Post by: mk3valver on 07 April 2011, 17:25
No, checked the fuses first thing. I put a another stereo on without the adaptor for the stereo that I use normally and swapped the wires like you said, that gave me power with my ignition off. But it goes off when I turn it on and /or remove the key. So when I managed to do this I put the adaptor back on with my normal stereo and nothing!!! Not even when the ignition is off! Can I just steal power from something else at the fuse box? And if so what do you recons best and how's best to do it. Again thanks for your help :)
Title: Re: New power for my headunit??
Post by: mk3valver on 07 April 2011, 17:52
Apparently I can run from my cigarette lighter as it on the ignition too, does anyone know what colour live is?
Title: Re: New power for my headunit??
Post by: mk3valver on 07 April 2011, 18:12
Red and white striped. And it's ok cos it a permanent live
Title: Re: New power for my headunit??
Post by: mk3valver on 12 April 2011, 20:19
OK, so I took a permanent live from my cigarette lighter with a snap clip, so my stereo is now working. I then noticed that my amp wasn't working, so I checked and found a blown fuse on the power lead. Then later on I went to start the car and I had a dead battery! So it got a jump and fine. Every time I have got out of the car I have got a shock and so has my mrs, and now I have blown my amp by the smell of it. Can anyone point me in the right direction please???
Title: Re: New power for my headunit??
Post by: trog_nfs on 12 April 2011, 21:26
have you stripped the insulation off the power cable by accident, and its earthing against a metal part of the body?
Title: Re: New power for my headunit??
Post by: mk3valver on 12 April 2011, 21:40
I dont think so, I'm assuming that, power is getting into the body somewhere but I dont know where from as it's a new cable and there's no wire showing. I'll take it all out tomorrow and have a further look. Just gutted my amp has gone!
Title: Re: New power for my headunit??
Post by: B-chi on 13 April 2011, 07:18
OK, so I took a permanent live from my cigarette lighter with a snap clip, so my stereo is now working.

I'd say this. The cable you snap clipped isn't designed to take the extra current draw of a hu.

If there isn't a permanent live available in the original iso run a separate cable back to the battery.

Also the only thing I'd use a snap clip for is the remote turn on of the amp. Use insulated crimps for everything else.

Your amp. Does it have a green power light and a red protect light.
Title: Re: New power for my headunit??
Post by: mk3valver on 13 April 2011, 18:37
yes, green power and red protection. But it smells like something has burnt out inside  :sad: