The isssue occured only with the new headunit.
Both are aftermarket headunits.
Old one was a Grundig SCD 5690 (4x25w)
New one is a Pioneer deh-4500BT (4x50w).
Today, i switched the yellow/red cables again.
The HU now had full power. But after a few hours it shut down for 20 seconds, randomly.
Now, (5 minutes ago) the head unit will not turn on with the switched red/yellow.
That is correct.
Somehow, the Red/red, yellow/yellow doesnt power enough; creating voltage drops.
WHEN the red/yellow combo works, no voltagedrop, thus... it does not always stay powered.
Checked this now.
Yellow @ 12v constant
Red @ 5-6v by ignition.
Any way to fix the low voltage by ignition?
No other sources 12v ignition live by radio. I noticed some people taps from cig light. As i am never using the cig light; i could just steal the ignition live from there, cant i? Is it a difficult task?
I was out of the country im sorry.
I am currently checking for any free switched live at the fusebox. Maybe pulling new wire.
For cig light; should i tap in by fusebox or remove the center dashboard by the radio?
i dont use ciglight anyway.
That being said; do you know which numbers at the fusebox that are switched live?
Vechile harness has red/blue (constant) brown(ground) and blue/gray( switched).no other wires in harness..
Really confused now.In the manual for the HU it says;
Yellow - Constant
Red - Ignition
So for me it would be;
Yellow -> Red/Blue
Red -> Blue/gray
When connection is:
SOMETIMES i get perfectly good sound, no problem everytime it turns on.But often the HU doesnt power at all (like right now..)
Yellow -> Blue/gray
Red -> Red/blue
The unit turns on everytime. also powers off when lights go off.
Sound differs alot.
Sometimes i can play loud, but most of the time- it voltagedrops,also; I regularily experience the speakers making a buzzing sound (going louder) then HU powering down, not being able to restart until powersource is disconnected (engine off, example)
This seems like a simple issue, but i cannot wrap my head around it, and it is starting to bug me alot. Stereo working "sometimes", just doesn't cut it..
PS. Used the voltagemeter on the ciglight. It too powers from turning the "electrics" on, not only by key-in-ignition.
not by my car at the moment.
But i do not recall any red/solid red wire at the harness.
My "switched live" is blue/gray. Although its only 6v..
I will check in a few hours.
There were no that sort in the harness.
Mind i have to connectors; one brown and one black.
The brown connector seems to have all the speakers lined up.
Cig-lighter shows 12V when ignition off/no key, although not lit.
(either that or with lights on.)
I have yet to become able to get to the wiring, i just checked from the ciglighters core.
I just got into the fusebox (difficult...)Now i have loads of wires to choose from.Since i never use the cig-light, i think i'll just tap from it.
Can you mention some 12V sources that i can use?
I'm thinking of using a 10a or 15a fuse.
EDIT: Damnit, my ciglight is a constant. 12V. Not sure why...Now i really need other options..
I am now concidering pulling a new wire from a switched live to the radio.
Just as an update;
I fixed the issue.
I tapped the mirror-heating with a new cable, running directly to the 6V cable. My HU now recieves 12V switched, and 12V constant. Everything runs nicely.
Thank you for your support.