Radio making battery go flat

Volkswagen20 · 04-09-2018 10:45am #1

I bought a touch screen radio out of a 2011 golf, I fitted it to my 07 Passat , the connections at the back were different so I cut the original ones off and joined the golf ones on. The radio works perfect just it kills the battery every night. In the mornings there isn’t enough power to unlock the car with the key , what is wrong does anyone know?

Alanstrainor · 04-09-2018 10:55am

Do you have the permanent and ignition power cables the wrong way around?

Volkswagen20 · 04-09-2018 10:58am

Alanstrainor wrote: »

Do you have the permanent and ignition power cables the wrong way around?

What cables are they?

biko · 04-09-2018 11:00am

Do you have a volt meter?
I suggest you check with a local auto electrician if you are in any way uncertain, as you can fry the circuits if you get it wrong.

Volkswagen20 · 04-09-2018 11:18am

The radio turns off / goes blank when the car is turned off so can’t understand iy

Guy:Incognito · 04-09-2018 5:32pm

There's a good bit about this on one of the caddy forums I used a few years back. Think there was a change in the radios around 07/08 and putting the newer ones in caused this. There's an adapter you can get AFAIK.

Radio making battery go flat

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