wiring a car stereo and avoiding the ignition

15 replies
Found 16th Mar 2011
when the car ignition is turned off all power is lost to stereo not even enough to remember the code, can this be sorted if the stereo has a constant live and not having a remote live off the ignition? any idea how to do this?
the car is a fiat brava, the stereo is a renault

15 Comments

I have this problem too, been meaning to take the radio out to have a look but haven't got around too it so this thread could be useful.

This might help

But I take no responsability. Might be the same issue in your car.

Original Poster

CyDoNiA

This might helpBut I take no responsability. Might be the same issue in … This might helpBut I take no responsability. Might be the same issue in your car.



they've gone to have a look, thanks for that. fingers crossed

i dont recommend doing it yourself but the wire needs to go to a live fuse that works even when the ignition is off, ie, hazard lights, main lights, horn, etc

Is this the first time a radio has ever been fitted in it? Is there a radio loom for the radio being replaced?

Original Poster

nope they tried swapping the wires red to yellow and yellow to red and its still the same ?
anyone else got ideas??

Original Poster

no its a second hand stereo my dad bought for his brava so its not the first install, and yes i think its best to take it to a garage

Is there a loom with a plug fitted in the car where the stereo should fit? If this is a standard loom plug then the wires will be easy to ID - power igntion, power, antenna, speaker L and R etc. Make and model of stereo?

You usually have a permanent live that keeps the stereo memory (clock, settings etc), then the ignition live that powers it up/down with ignition.

All cars should have this. If not, someone has tampered and possible used it for something else (mods?).

Get a multimeter.

Find constant 12 v power source, then cut wire from radio loom and attach it to that (i sometimes just strip wire, then tie it round and tape up using electrical tape)

Find the ignition wire by turnining on the ignition and finding a 12V power source. When you turn it off if there is no power you have your ignition wire. Attach the red cable from loom to that wire

Original Poster

thank you all for the tips and links, printed everything out and given it to my dad, fingers crossed he will get it to work tomorrow.
thank you all once again

So - did it work okay or not?

Hi my mum has a problem with her stereo it seems to have taken control of the ignition when you try to start it will not start unless you are holding in 1 and 6 on the stereo it is a first time installation my mum has a 1999 (t) ford escort 1.6 16v finesse. can anyone help?

puggypug306

Hi my mum has a problem with her stereo it seems to have taken control of … Hi my mum has a problem with her stereo it seems to have taken control of the ignition when you try to start it will not start unless you are holding in 1 and 6 on the stereo it is a first time installation my mum has a 1999 (t) ford escort 1.6 16v finesse. can anyone help?




So you tried to start the car, it wouldn't start and you thought, I know, I'll try pressing buttons 1 & 6 on the stereo oO

Have you just fitted the stereo and was it connected with a ford to iso cable?
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