Hi, my JVC kdg431 stereo in my fabia just went dead the other day when I went to turn it up to very loud on a bass heavy station . I have fitted the two rear blaupunkt speakers that were on ebay afew months back and i fitted the fm signal booster (by splicing and taping). Im not sure what the front speakers are, im guessing they are after market as they are quite powerful.

Ive checked the stereo units rear fuse and its fine, and ive checked the "audio system fuse" in the fuse box and it is also fine. Could the unit just of blown completely? Or is there another fuse im overlooking? And is the cause of this blow out more likely due to me trying to run more watts than the stereo can handle or bad connections?

Anyway ive just reserved a Pioneer deh-2300ubb at my local argos for £49.99 (good deal, £89.99 in halfords) but i dont want to damage a new stereo. Cheers.

ok so ive tried new stereo and still no luck. Any ideas on which fuse it could be? Or could something of burnt out completely in the loom? Thanks in advance

Also just been reading up on ice installs and read that you should ground a car stereo. I dont know if somewhere it is grounded or not. Also Realised there are fuses under the bonnet that could of blown .

None of the fuses under the bonnet are relevant to the stereo (well not if the car actually starts and runs).

In the fusebox inside the car, check fuse number 10 and 45. Check any fuse plugged into the rear of the stereo or in its loom too.

The stereo's wiring loom provides an adequate ground, unless it is damaged. The fuses are there to protect the wiring, so unless there is physical damage, or an incorrect fuse was installed, this is unlikely.

Which wire did you splice the booster into?

Ok cheers I will check the number 10. Ill get a picture of the splice, it must of been right because the booster did actually work. Ok thanks ill get back to you.

Hey mate it was just the number 10 5A small blade fuse after all! I overlooked that fuse as in my haynes manual it is called the "contact S accessories" fuse and I didnt have a clue what that was.

Ok here is a pic of the signal booster splice I did on my old stereo's ISO connector wiring. I have the blue cable on the booster spliced into the blue and white wire on the ISO block. It was just a wind and tape job but it worked but it could be why my fuse blew.

This new stereo is a pioneer and comes with new a ISO connector, should I splice the same as the last one? Or is it even possible that this new stereo has an inbuilt signal booster (any way of checking this? or is it just case of reading the manual?)

Ok thanks pal now we are getting somewhere.

Signal booster attaches to blue wire from the stereo. Ensure the blue wire does not get connected to the car's ISO connector.

The S contact is the switched live wire that goes live when the ignition is switched to ACC, and turns off when the key is removed.

So that setup as shown in the picture is correct then? As there is no pure blue, only a blue and white, the new pioneer one is slightly different I will check to see if it has a pure blue wire on it. Im confused as to what exactly is the cars ISO connector , is that thing in the photo not it?(this is the connection that comes with the stereo)

Is the cars ISO connector the gubbins thats actually in the car that this plugs in to?

Ok here is the pioneer wires and I think either the top empty blue and white cable with bullet connector or the bottom one labelled "remote control" will be fine for the fm booster. Ok thanks for all your help. cheers.

Looks exactly the same as my Pioneer stereo loom. The one labelled System Remote Control is where it goes. You may want to crimp a male bullet connector to the booster so you can just plug it in. Make sure there is no connection to the top right blue wire.

Well (I did this before I read your message) ive crimped a bullet connector to the fm booster and plugged it into the top right blue and white one, and it works. I mean that top right one is meant to connect to the bottom blue and white one anyway (top right is male bullet, bottom left is female) so surely it doesnt make a difference? Or have I done it very wrong?