2 Din head unit flashes from day to night mode when rh indicator and brakes are on.

So I have had this issue since I can remember. Its done it with the previous 2din head unit aswell.
I am sitting at the lights, foot on the brake pedal and right indicator on and the day/ night mode screen flashes between the two in sync with the indicator. I take my foot off the brake and it goes away. I put the left indicator on and it doesn't do it. Something I have also noticed, whether this is just a coincidence or not, I won't do it first thing in the morning, say when everything is cold. But having said that, it may still do it, its only because its not something you will look for when you first jump in the car for the day.
Where would I start looking? I am thinking because it only does it with the right indicator on, it must me related to a connection or earthing to one of the indicators. Maybe. But it stops when I take my foot off the brake. So I am a bit stuck on where to look first.

Thanks.

Sounds like could be a bad earth, try earthing the chassis of the radio directly to earth first (easy place to start)

Hey mudski did you use after market adapters to connect the wiring? or did you hard wire it?
If you hard wired it try getting power from some where else.

If your Head Unit is connected to your dash lights as most are then you've got a bad earth somewhere on the RHS indicator lamps.

Some but not all of the current is finding its way to earth via the clearance lamps.
This voltage will also be sensed at the dash lighting but may not be enough to notice during the day.
The brake lights are raising the current flow as well

This is enough to trick the head unit into thinking the clearance lamps are... on...off...on...off...on... ergo... night...day...night...day etc

Could be other things but the first place I would check is your Trailer Plug if you have one and after that the light assy's for corrosion etc on the bulb holders

Quote:

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Originally Posted by paulyg

Hey mudski did you use after market adapters to connect the wiring? or did you hard wire it?
If you hard wired it try getting power from some where else.

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Using an adapter mate...

Thanks for the tips guys. Bad earth looks like the culprit maybe. Would just pulling the globe from one light at a time work if it was an earth issue?

Quote:

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Originally Posted by mudski

Using an adapter mate...

Thanks for the tips guys. Bad earth looks like the culprit maybe. Would just pulling the globe from one light at a time work if it was an earth issue?

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Quite possibly... but check your trailer plug first (if you have one).

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Originally Posted by the evil twin

Quite possibly... but check your trailer plug first (if you have one).

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My trailer plug sits in where the jack lives and is wired using flat 7core. It was doing this issue before I changed it to this way but I will look anyhow. Funny thing is, driving all today it did not do it once. Its been raining here a bit so maybe that has something to do with it...

It's all your dodgy wiring mate !!! flame suit on !!!!!!!

Quote:

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Originally Posted by mudski

My trailer plug sits in where the jack lives and is wired using flat 7core. It was doing this issue before I changed it to this way but I will look anyhow. Funny thing is, driving all today it did not do it once. Its been raining here a bit so maybe that has something to do with it...

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Cool, sounds like it won't be a trailer plug then.

FWIW many types of corrosion go lower resistance when damp so that will give a better, but still crappy, electrical path.

Thanks ET. I might have to wait until it does it again and be ready....