Hi all,

I am having a bit of trouble installing an aftermarket radio into my 1988 240 volvo, I pulled the original radio out and found a different type of plug to the normal 240 one I am used to. I am having trouble working out which wire is which can anyone help? The harness plug that goes into the back of the radio is 9 pins long (one of which is not used), the colours are (left to right): grey, orange, green, blue, yellow, unused, red, white /w blue stripe, blue /w white stripe. There is also a black wire with a plug (remote power antenna?) and black cable with an o connector that was held with a screw to the case (I am assuming this is the earth?).

Any help would be greatly appreciated.

Steve

From the 1988 Volvo WDM Service manual

#1, Green - Fuse No. 8, constant power

#2, Black - Fuse No. 1, key controlled power

#3, Red - power antenna, amp turn on.

#4, Yellow/white - LF speaker positive

#5, Gray/yellow - RF speaker positive

#6, not connected

#7, White, LF speaker negative

#8, Green, RF speaker negative

#9, Black, ground connection

The car is probably pre-wired for a power antenna. Look in the trunk ahead of the spare tire for a 2-place female connector, black and green wires. The antenna plugs in there.

Good Luck,

Bob

:>)

And yet another way... You layed out the car harness. For some reason the radio harness has different colors. The dark blue wire is switched positive. The positive speaker wires are white and blue striped. One has a big blue stripe and the other has a big white stripe. The corresponding ground wires are light blue and white.
the grey wire has no function that I am aware of. The car harness usually has an empty slot where it is in the connecter.

Now I am curious. I have a CR-4173 radio, and a CR-712, both in a box someplace in Bob's Garage Volvo Parts Department. I wonder if their harness color coding is the same? The both can go into that 9-pin car-side connection.

Oh, maybe the gray wire is a dimmable panel light, but the 200 series doesn't support that.

Regards,

Bob

:>)

I am reading this discussion with much interest because I am going to install a new radio in my car.

The panel which shows the station that you are on is dimmable in my car (I assume that is what you mean my "panel light").

The diagram that came with the adaptor Crutchfield sent me says:

Nine pin plug, looking at the plug side:

12 volt constant power
12 volt switched power
power antenna
left front positive
right front positive
blank
left front negative
right front negative
chassis ground

Four pin plug, looking at the plug side:

right rear positive
left rear positive
right rear negative
left rear negative


You can verify these by connecting a small 2.5 volt battery across the pins of a speaker and see if you hear the speaker activate.