Car electrical fault

[Inx]

Hi guys, first post just came across this forum so thought id ask the pro's before pulling my hair out even more..

Anyway, I pulled onto my driveway and all of a sudden my music just turned off, I look down to see my headunit has powered off and refuses to turn back on. When i took the face off the red light is flashing so there is power going to it?

I then noticed my clock backlight went off and I was also unable to change the time. Finally I realised that my dashboard was very delayed (about 10-15 seconds) when i turned on my engine, the needles would normally shoot up straight away.

I am almost certain these 3 faults are linked. My friend who is a student electrician had a look and assumed it was the fuses or relays, he proceeded to check and change but it seemed that was not the problem. He now beleives there was a short but is unable to locate where.

If anybody knows what this might be I would really appreciate some feedback because i recently spent alot of money on my sound sytem and im unable to use it.

p.s. I did change my headunit and the same happens, power is going to it but it will not display anything nor play any music.

 

[Guest123]

Hi.

What make of car do you have???

If it's one of the following VW, Audi, Seat or Skoda then you could try asking on one of our other forums.... SAVS.co.uk | VW Audi Forum | Seat, Audi, Volkswagen (VW), Skoda

 

[Inx]

Hi, sorry forgot to mention its a ford fiesta ghia 1.25L, V reg.

 

[telectrix]

my first pointr to look at would be the battery terminals, high resistance under load. similar thing happens when you turn the key to start, everything goes dim.

 

[michaelw6]

might be bad earth i had similar problem on an old astra some years back it was the earth strap to the engine.

 

[UNG]

I would check the alternator output and the battery sounds like one or both may have failed

 

[ste mac]

sounds like a bad earth problem to me. You will find them behind driver and passenger kick panels. Or the other possibility is a fuse blown, there may be more than 1 fuse box, ie: under dash & under bonnet. There is nearly always 2 fuses for a radio, 1 for the memory feed (stays live all the time, usually 5amp-ish) and a main power fuse which will go live on ignition key positions 1 & 2 (usually a 10-15 amp fuse). Just looking on Autodata you need to check fuse numbers 6, 19, 22 for radio & earth point 4 which is behind drivers kick panel.

Hope this helps.

 

[ste mac]

Just noticed on Autodata that radio and instrument panel share fuse 6.