GolfGTIforum.co.uk
General => Car audio => Topic started by: afcbob on 29 October 2007, 19:07
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Lastnight my headunit just stoped working only had it in a few days, so checked fuse the head unit fuse and the fuse under driver feet is fine. so any idea what it could be i check with my old headunit thats not working as well.
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get a dvm (digital volt meter) and check there is still power goin to the wiring harness where you plug your stereo into..
if there is no power there then hardware wire 12v volts, fused of course, straight from the battery and then you wont need to worry bout the cars internal wiring loom.. also you'll get a tad more umph from your hu.
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Ok will give it a try so would i just take a wire from the + in my car and run it to the head unit is that right.
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nah straight to the battery under the bonnet
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Sorry staight "FROM" the battery to the hu
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Thats what i ment straight from battery's + to the headunit, also does it mater what kind of wire i use.
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Was hoping to do this the day can anyone tell me if i got the above right please.
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Ok i run a wire with a 10amp fuse from battery to headunit nothing :angry:. but when i had the + of to put the wire on there was heaps of white poweder around the + what is it and is that why it not work.
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wthe white stuff is just corrosion..dnt worry about it..clean it off with a wire brush, add some grease to the + connector and try again..
just thought i'd check, you obviously have the rest of the headunit wired up when your testing it yeh? it wnt work with just a positive, needs an earth, and the ignition live wired up aswel.
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Yeah rest is wired up but still nothing at all i have tried 3 head units now nothing.
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thats odd..sounds like one of your internal wires is nackered..gimme a bit more background info
when you say "just stopped working"..what happened? did it just not turn on after you turned if off or did it stop when playing? also what car you got? when fitting the new unit did you add or ammend any exsisting wires? if your old headunit was workin for a while before and then when you fitted the new it only lasted a couple of days, it could be something you've done.
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also if your local to bournemouth id be happy to have a look it for ya :)
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No in scotland but thanks anyway.
Ok i fited it and was work fine that day, it's a Alpine and you lock it in to the dash so after i tested it all was fine. i pushed it in the dash and locked the small pins on the headunit tried to turn on nothing.
My car is a mk3 golf cab 92 plate
When installing i had to hard wire all power,gnd and the red wire (can't mine what thats one is) as my head unit did not have the plug for them. hope you understand that bit.
Can't think of anything else apart from it's doing my head with no music in the car.
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hmmm... i have had that happen to me many a times. when pushin the hu in and it fails, usually leads to something being disconnected. but as you said all the connections are fine it can't be that
i'd deffo have another check of your fuse box, can be some sly ones about that can go untouched. also recheck all your connections. the red wire - i take it you have wired the same as the live (yellow)?
another thing is check that your earth is actually goin to ground..use a multimeter (dvm) to do this..
sorry if this doesn't work then you haven't checked your connections properly..there is so little to go wrong, its usually very straight forward. sorry but i cant help anymore then this
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Right getting some where i wired the red and yellow together also from the loom the brown/red and white/red together. now what happens is it will come on if you put the key on number 1 but as soon as you turn the key any more is goes off.
Is that any help to whats wrong.
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wait a sec..why have you joined the brown/red +white/white red? dnt start just tryin different combinations or you will blow something!
what do the brown/red +white/red say they are for in manual..that'll help me help you..
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the red/white is fuse/rely box then to battery, and brown/red is ignition switch, i tried it that way as when i got my old car before this one thats how someone had it setup so thought i would give it a try.
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i thought you had hard wired straight from the battery? ignore the red/white..brown/red should go straight to the red from the hu and no where else..if you want the hu to function without the having the ignition on, wire the red from the hu to the cable run from the battery..dont use the red/white wire, thats whats causing all the problems
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I did try hard wire but did not work, but will try again to morn the way you said.
Thanks for all the help.
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no probs, happy to help..i know what a pig sound systems can be with limited knowledge... hope you get it sorted!