xr6 turbo Battery light on very dim/faint - Battery Drain - Flickering cluster when turning car off - etc

[Bazzayk]

Hey guys hoping someone on here can help, my car is a 2005 BAMK2 XR6 Turbo Manual. long story short I took my car to a tuner, got the car back with a very dim/faint battery light on. initially we thought the alternator was on the way out so I replaced it, made no difference. then realised the battery was going flat over night. went on a rampage changing the alternator, battery, and starter motor. none of these fixed the issue. more and more weird stuff happens with the car, for example when I turn the car off the instrument cluster flickers like a Christmas tree then turns completely off. then if I put the handbrake down whilst the cars off, the traction control light turns on very very dim. not sure if its related but a few years ago my surge tanks fuse melted, same thing happened the other week hence why I've decided to finally address this annoying issue. I also noticed on the odd rare occasion after parking the car at night I've seen the front headlights indicators on very very faintly barley noticeable as if they were getting a small current. also when I connect my battery my interior dome light flashes for  a second (I installed an LED interior dome light by the way). also usually when listening to music, the right side speakers stop working leading me in having to turn the volume up really loud for them to kick back in and start working. I don't drive the car much at all hence why I've had the issue for ages, I've temporarily overcome it by disconnecting the battery every time I park it up. there is a lot of weird things going on that I may have forgotten to mention which I will add to this thread as I remember...

MAINLY, cars got a drain and faint/dim battery light on and is doing weird electrical things

Thankyou in advance

[k31th]

So it definitely wasn't happening before the visit to the tuner?

 

Have you had it diagnosed by an auto-elec? seems like something for an auto-elec, as with those sorts of weird symptoms, we'd only be massively guessing as to what might be the cause and is probably a short or drain somewhere which auto-elec's are perfectly suited to diagnose/fix.

[Bazzayk]

Definitely was not happening before going to the tuner,

I had an auto elec look at it, he said its the alternator because there was a tint bit of oil on it, I assured him I changed alternators twice and they were brand spanking new and dry with no oil yet had the same issue instantly, battery light comes on dim when motor starts 

[k31th]

OK, so you never got the auto-elec to look at anything other than the alternator? ... probably a good idea to go back to the tuner to ask them what they might have done that could have caused an ongoing electrical fault and if you have no luck there going to a 2nd auto-elec to explain the situation before they even lay an eye on it.

[Puffwagon]

You either know how to diagnose and fix this yourself or it's an auto elec job. Yeah we can suggest to check if the fuse box is melted somewhere or the pump wiring melted through but everything electrical has pretty much the same process of diagnosing.