Im chasing possible broken wires which is causing the headunit to pop and go into protection mode (as per other post on the mk5 forum)
quick one for you tho, will it matter if i swap over the fuse(s) that are coming from the switched live and permanant live colours
at the mo they are going red - fuse - red and orange - fuse - orange.
just wondering if it could cause problems if i went red - fuse - orange and orange - fuse - red ?
now i have problems!!!
i went 2 halfords and bought a new ISO for the car.
Came home and refitted it using the same pick up points from the old one.
thickish black for the red wire
yellow with grey chaser for the orange wire
Both were picked up from the loom behind the glovebox.
Unfortunately the person who fitted the old loom cut the yellow wire *dunno if it was by accident* but now when i soldered the wires together and added the orange wire from the ISO loom it only picks up 4volts.
The stereo also now doesnt hold memory and resets everytime.
Cant work out whats going on as the thickish black wire (which is now running the red iso wire is picking up 14v without a problem)
Its made the voltage meter on the stereo correct but resets everything.
Any ideas what could have happened? Maybe when the new orange wire was connected it blew a fuse? (but dunno why its only getting 4v. Even from the joint itself its only 4v.
you say the stereo dosent hold memory, try swapping the red and yellow wires over.
the 2 fused wired on the red and orange loom were for the parrot kit.
The normal ISO doesnt have the ability to swap them over as they are soldered into the car loom.
I think the problem lies with the yellow with grey tracer wire only having 4v run through it (should be 12v)
Grey/Yellow would normally be a illumination colour for the side lights
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Electrical fault finding also taken on
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I 'm having the exact same problems. I have an Mk4. The yellow wire is also cut on mine so i guess it's an installation thing that they do.
Originally Posted by scdavis
My problems started when I relocated the head unit.
I took it from over the A/C unit where it was, and fitted it under the A/C.
Eversince that godforsaken day, the stereo goes into protection mode every time something uses electricity.
Aka when i turn the steering wheel, when i turn on the heated rear window, even when i lower the windows.
Weird thing is, that it doesn't always do this! I actually took the car to a ICE specialist and it didn't do anything! Everything was working fine. 30 mins after i left the shop it started again.
I have checked all the ISO connections but can't find any visible problems.
I have cleaned the connectors but still the same.
The battery doesn't have a problem as i have switched it and still get the same issues.
I am certain that the problem comes from the ISO connection. That is the only thing that was tampered with during moving the head unit.
And a weird thing. The black wire from the loom which is supposed to be earth, isn't connected to anything. I have tried leaving it hanging and grounding it to the car but any case problem remains the same...
Also when i take out the whole thing to check it, it starts working fine once i reconnect it. For a day or so it works fine. Then it starts the same thing again...
My car is an Astra Mk4 1.4 16V Sport, and the headunit is a Pioneer DEH-P55BT.
Any help would be much appreciated...My next step will be to get a new ISO plug and pray that does the trick...
P.S.: I was thinking of taking the plugs and filling them with silicone to insulate the wires from each other, to eliminate any chance of a short circuit...
Any opinions as to why that would be bad? Or should i go for it?