so I got a new radio to fit, have got all the harnesses adaps I need but the radio wont turn on, just some of the lights come on but then go off. the company I got it from have told me to check the voltage is betwenn 12 - 14.. i have a multi-metre but im unsure do i just check the voltage of my car battery or the feed to the radio? if its the latter could some one please explain how??? please help. (ps i know this probaby simple but im thick)

Zach

You need to check for the Voltage at the Terminals/Socket/Feed from your Car that connects to the Radio. You should see some thick Red, Yellow and Black wires there. Check Voltages between the Red+Black and Yellow+Black, anything around 12V should be fine.

Thanks very much... I can't See there being a problem with it as the car is just a year old. so Im betting on the unit being faulty

Have you got the can bus adapter to supply the switched live?? What you describe is when the radio is only getting the permanent live.

Have you got the can bus adapter to supply the switched live?? What you describe is when the radio is only getting the permanent live.

I dont have a can bus adaptor... just a standard one. So is this my problem?

didnt even think of needing a canbus one.. :( more spends!! haha

Yea can bus adapter is needed to provide a switched live which is the yellow on your stereo as modern cars only provide a permanent live which is connected to the red wire on the radio.

Canbus adapted is best as it gives your radio other info such as light and speed pulses. Most importantly it tells your stereo to turn off automatically.

You can however connect both red and yellow wire to the permanent live but you need to remember to turn the radio off when you get out the car as it will stay on until the battery is drained.

Or third way is to take a feed from a switched live, usually the cigarette lighter but no good for Fabia as its permanently live, from the fusebox with a piggy back fuse.

Hope this helps

If you can try this out;

If you have a YELLOW other than a RED wire in the HU Adaptor, connect them (RED+YELLOW) together and connect the pair to the RED wire on the Car Feed and BLACK on HU to BLACK on Feed, the HU should come on, if not, you really need to check the Voltage across the Feed leads, irrespective of the age of the Car. And if it still does not work, it most probably is the HU after all. If it worked, you will need an Adaptor as suggested above by P1TT8ULL.

Thanks for all the replies. I am taking to a company for fitting tomorrow. ill see what they say.

Zach