Are fiat Aerials amplified?
My fiat fiorino has a roof aerial with rod aerials in the drivers A pillar [windscreen]
The radio reception was great before but after fitting a double din unit the radio reception is very weak, RDS keeps rescanning
So is it an aerial issue?
Does the aerial need power as its not getting it from the new head unit....or is it just the aerial is not compatible?
LUIGI

Anybody out there with info
luigi

I thought this was for ice not just reams of b****y radio code requests
LUIGI

Very likely that the aerial is amplified, most are these days.
Being CANbus, when the original radio was turned on, the body computer then powered the aerial.
So now you have a project for the weekend.
You will need to dismantle trim to find the power feed to the aeiral(s).
Your replacement aerial should have an output, usually a blue wire, but can't remember which pin it is on the DIN plug, which was originally intended to power electric aeirals, when they were fitted on a wing and powered up and down. That output can be taken to the aerials to power the amplifier. It should give you battery voltage when the radio is on, and nothing with it off.

Hi
Cheers for the info
So on the original iso one of the wires goes to the Arial as power feed?
LUIGI

Your original wiring was probably CANbus.

Originally, when the ISO plug was created, there were wires for various things, mostly inputs, but one output for the aerial power.
You had permanent power, for memory and time, etc, ign power to tell the radio when engine was on, lights on, for display dimming, reverse for nav function or reverse camera, speed for nav, an earth of course, and the output to teh aerial, which could also, via a relay, power an amp.

Newer cars, from around 2003 I think, use CANbus. All computerised. Now we get two fat wires, permanent power and earth, and two skinny CAN wires for the data. These data wires carry the signals for all those other functions. Ideally an adaptor should be fitted that interprets the data signals and gives analogue signals to the radio.

Do not connect output power from the radio to either of the CAN wires as there may be a risk to the body computer.

Your new radio should have a pin diagram for the plug, identifying each, so look for the aerial power output. Take a wire from this, by-passing the car connector, straight to the amplifiers fo the aerials, hence needing to remove trim.

If not sure, take it to a car radio specialist. Remove the trims yourself, saves time and money.

My aftermarket double din head unit is connected to cambus control unit to save all the faf of getting switch supply ect, but the radio signal is very weak
I have bought a fm Arial amplifier to see if that will do the job
It connects to a blue wire on the head unit which is a switched feed
LUIGI