Whining noise that increases with engine revs

[Judonems]

Hi . I am new to this forum. I recently purchased a 7inch touch screen head unit on ebay for my wifes Toyota as she wanted a back-up camera and we are not too financial atm

Anyhow this unit had a fairly good review from a guy on you tube who did a" how to instal'. So I thought for $45 delivered to Australia I would give it a try

Im not very handy myself but got a lot of enjoyment out of installing the unit and it works fine..that was until I connected the video lead and power lead for the camera to the back of the headset and got a whine which increases with engine revs

There was no engine whine before this . When I disconnect the camera leads the noise goes away.

Any suggestions to resolve the problem will be greatly appreciated

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[Popwarhomie 5,000+ posts]

Keep the engine off.


Has to be a ground issue.

 

[Boomin_tahoe 5,000+ posts]

Dirty ground, rusted, painted, etc need a metal to metal. I'd check the ground is good as mentioned.

 

[Judonems]

Thanks Ill check the gounding

 

[02WS6]

Its the internal camera ground, not something that you can resolve by cleaning any chassis grounds on the car, most likely you'll need a filter capacitor wired into the harness like this one: https://www.amazon.com/dp/B000CEDZBA/?tag=caraudiocom-20

It will require some manual wiring, a bit of soldering and some heat shrink tubing for a clean install. Youtube will be your friend here.

 

[Judonems]

I checked the wiring at the camera end and I had missed soldering one of the connections. The negative power lead from the battery was only twitched.

This seems to have solved the problem by about 90% . There is still a tiny whine but we acn live with that
A mate has given me his surplus amp so Im am going to hook that up .. I suppose that will amplify any imperfections so maybe I should fit a filter capacitor anyway


.Thanks heaps for the advice