Help with power seat wiring 1993-94 850 into 122 wagon

[Jimboboobob]

Posted: Sun Apr 13, 2008 3:24 am

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Hi, I am putting 850 power seats (drivers /left) in my 1966 Volvo 122wagon and could use some help with the wiring.
I was told that the seats are from U.S. 850. The date on the electric contol box under the seat is 9/19/93. They are leather and only the drivers is power.
The control has 1,2,3 and a mem button as well as 1 up, down, front ,back seat button and an up, down back rest button.

OK, My question is how to wire it. There is a 4 blade plug that sends power to the control box.I do not have the female(wiring harness) side of the plug.
My hope is that someone can tell me which of the 4 spades are positive and which are negative.
Thanks, Jimboboobob
P.S. I hope its cool for me to post in places.122 and 850

[sdewolfe]

This is a very old post. There doesn't seem to be much Amazon discussion here. While I am sure you have figured this out by now I thought someone else might like to put 850 seats in their 122S.

The connector is designated 'A'
Pin assignments:
A1 --> 30A fused power; battery voltage, in DIN speak, the '30' line.
A2 --> Prior to August '94, connected to A1 in the harness. After August '94, connected to 15A switched power.
A3 --> Ground (DIN 31 line).
A4 --> Data line to pin 6 of the OBD Diagnosic Socket, right front of the 850 engine compartment.

So, for your late '94 control module,
A1 --> 30A fused hot at all times.
A2 --> 15A fused hot with KEY ON.
A3 --> Ground
A4 --> NC

If you had a passenger seat, it would be wired exactly the same way.

I hope you have at least a 50A alternator? This seat will overtax a 35A charge circuit. Use new wires and inline fuses (or add another fuse block). Do not try to pull power from the original fuse block; the wiring is just too old to handle new loads. Use the DIN terminal 54 line from the key switch to pull in a relay to supply switched power to A2.

I hope this helps someone. My first post here at Matthews Volvo site.

--sd

[MadeInJapan]

Hey there....Mr. Shannon....funny you say you're a 52 year old fat man...I'm a soon to be 49 year old fat man myself.
Let me be the first to welcome you to Matthews Volvo Site!
MIJ