Tuesday, Nov 03, 2015 at 09:25
I've used a couple of the ISO conversion cable sets, they only cover the basic connections & sometimes have mismatches.
Have done Ford, Mitsubishi & Toyota to Pioneer.
In all cases the ISO cables usually have 2 plugs, one with 8 pins for the 4 speakers,
the other with eight pins, but often only the last 5 connected, 1,2 & 3 can be optional.
1.-Speed sensitive volume control, (haven't seen that one).
2.-Cell phone mute (not present in the sets I've used).
3.-Revers light signal ( not seen on the Aeropro sets I've used either).
4.-Ignition/Accessory 12V
5.-12V output (for
accessories like aerials & amps).
6.-Dash light illumination
7.-Battery/Permanent 12V
8.-Earth.
So in the example of the installation of a Pioneer DVD head in a 2003 Pajero I found.
I had to patch thru the reverse light signal, not present in the vehicles plug, to get the reverse camera to operate.
Similar thing with the hand brake signal to inhibit video while driving, ran a bit short on wire on that one, think it's touching ground somewhere.
The dash light signal also wasn't patched thru on the Pioneer to ISO side, so had to add a pin from the original harness for that.
Found the dash light one to be a waste of time as it dimmed the display when I drove with park lights during the day so disabled that & used the units time based dimming option.
Toyota was same head similar situation, but found that the radio had weak reception on AM stations, barely receiving local stations.
Turned out some more patching was required to feed power to the Toyota's amplified aerial, which only required power for AM reception and not FM.
Moral of the story is the ISO harnesses only patch thru the basic connections.
Hope that info is useful.
Cheers
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