No power 2 stereo, dash dials keep dying.

[banjoed07]

Hey.
Over the last 2 months the power 2 my head unit kept dying on and off, when went over a bump or when braking, i just figured was loose wire or summit. Now the head unit has no power to it at all!!

The other prob ive got is that my dials dont seem 2 be working, when i turn the key 1 click 2 power up the dash, the needles come up ok but when i give it a few revs all 4 needles drop to the bottom (oil temp, petrol gauge, rev counter, spedo). And also the backlight on the dash if off.

Just thot i wud note that my batt. recently died and replaced it, would that effect it in anyway?

Thanks for any advice in advance, contacted a few garages they all seem 2 think that its a loose earth cable and that its a time comsuming job - which cost more ££££££

[stevcatristicas]

If is what they say, a bad earth linkage, is very simple to discover it and solve it... Just a simple multimeter and some inches of wire will do the trick...

[Predator_R32]

as said most probablies a bad earth connection somewere

[banjoed07]

ok cool! but where do i start?, ive got a multi meter n shit! How do i kno where all the earths r n which ones that it cud be, tryin 2 get a hold of wiring schematics but not avin much luck, my local dealer pretty much told me 2 piss off!

Is there anywhere on net 2 find them ive tried looking and yes im 1 o these guys who doesn;t ave a haynes manual

[Predator_R32]

try with the alternator and battery earths, ill have a look in the haynes to see where the earths for the headunit and dash are located tomorrow mate, pm me in the morning to remind me :y:

[liam_b]

cheak chassis and engine earth next to the battery make sure there nice and clean and bolted up tight

clean the battery terminals

cheak the earths next to the doors are not loose too

[banjoed07]

Thx guys i will try checking the earths and that 2nite when i finish work!

Other prob ive got is that i fitted the new batt and overnight its been drained aswell, is this all conected with the loose earth, also when fitted new batt when engine is running i measured the voltage across the batt which was 18v no lights or anything on! A guy at work was sayin that was 2 high a reading - any advice?!

[liam_b]

ummm that reading is very high should be around 14.4 im not sure what this could be but im sure someone on here can help

[Gabbastard]

a mate had the same problem, which turned out to be a dead rectifier in the alternator, which led to overcharging the battery. Worth a check.

[banjoed07]

Alright? Check most of visible earths they seem ok(jst a quick check tho) ive also found out that when when key is off the car battery is drawing 3.20 amps which is far too much?!? can any1 point me into the right direction in wot might be draining that much amps?

[Predator_R32]

have you recently installed amps??

[banjoed07]

Nah nothing new with the car part from couple cv boots