Wiring diagram

[Trevor Ayling]

Trying to fit Sony xr3749 radio into my 480 turbo, any idea where I can get a wiring diagram for the rear connections off the net?

[coyote1980]

If you have the 3x3 big radio connector in your dashboard you can either buy a ISO-connector to make it fit, or build one yourself:

Not all shops sell them, sadly... So if you have to make one yourself:

Code: Select all

-------    -------
|X * X|    |1 * 2|
|X X X|    |3 4 5|
|X X X|    |6 7 8|
-------    -------

The * marks the spot of the dummy pin, X marks the spot of a real pin. In the right image the pins are numbered, below are their purposes. This illustration shows the connector in the car when looking at it from the front.

1 = electr. antenna
2 = earth
3 = 12V switched (ignition on)
4 = positive (+) right front speaker
5 = negative (-) right front speaker
6 = 12V permanent
7 = positive (+) left front speaker
8 = negative (-) left front speaker

Hope this helps (and that it is correct).

[Trevor Ayling]

Daniel thank you.

I am OK with the wiring coming from the loom to the old radio.

I am not sure how the connectors on the back of the radio connect up. The top ISO plug is obviously for the speakers, but which is left, right, front, back, isnt clear - but I can experiment I guess. The bottom ISO plug is for all the power connections and is not clear - can you help with this?

[coyote1980]

You mean you are looking for Sony radio schematics?

[suddy]

i think ive got a service manual for an mdx-5970. if its the same connections i can scan it and send you the page... i'll have a look for it tommorrow.

[Trevor Ayling]

Yes please, the Sony schematics would be very helpful.

[suddy]

its on the web at:

http://www.minidisc.org/manuals/sony/se ... _c5970.pdf

about 4 or 5 megs i think.