V70 electric seat question... HELP!!

Hello all,
I have just installed a set of leather seats in my V70, and the
driver's seat has all the electric adjustment features. Only problem
is, there is no electrical connector for me to plug it in! This means
I'm left with no seat adjustments until I can figure out how to wire
the seats in!
I therefore need some details on how to connect the seat. I assume it
just requires 12V power.
Perhaps someone out there can furnish me with a picture of the
connector when plugged into the loom, so I can get some clues from the
colours? Once I know which pins to use in the plug, I can then work
out where to take power from. Tapping into the cigar-lighter socket
seems possible, and the power would be switched by the ignition then
too.
I'd also like a circuit diagram if possible. I have the haynes manual
for this vehicle, but the circuit diagrams in there leave much to be
desired.
The connector in question plugs into the ECU which is mounted under
the front edge of the seat. If someone has this type of seat, please
get your digital camera out for me!! E-mail address is

In the meantime, I'll drive with the seat too close to the pedals, and
with my head sticking out of the roof! At least I now have a heated
seat again, my other one broke last winter.
Any help appreciated.
Joe Landy
Peterborough
UK.
P.S Pair of front, Beige, Cloth seats for sale, with driver's heated
part not working. Otherwise VGC. Any offers?

 

What year if car is early 850 / 70 series the connector
should be close to the floor heater duct under the sips
tunnel

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Man's future is hidden."
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Hi Mr Klein, and thanks for your reply.
My car is a 1997 model V70, one of the first few.
Do you think the connector for the seat will be present, even if the
car didn't have an electric seat as standard?
The connector isn't floating around under the seat anywhere, but I
guess it could be under the carpet where you suggested. I'll have a
look at luchtime.
The car is UK model, so I'm not sure if Volvo usually fit looms for
equipment which isn't standard. I still can't locate the CD changer
wiring in the boot, or at the radio end. I've reached the conclusion
that this wasn't fitted in the factory.
Cheers for now.
Joe Landy.

 

It is possible but from my understanding was that most
of the wire harness are there just have to dig a little
should be very close to the sips tunnel (Sips = Side
Impact Protection ) which runs along the B post from
side to side
Glenn

 

Right then. Made some progress today!
I removed the drivers seat again, peeled back the carpets, and had a
good rummage around. There is definitely no loom present for the
electric seat! Strange I know, but true.
I then proceeded to remove the ECU from the seat base. I'm an
electronics engineer by trade, so I was then able to identify the
polarity of the circuit! Great! I also identified the permanent 12V
supply, which is required to keep the memories stored, so I connected
the whole lot up to 12V, and hey presto, I have an electrically
adjustable seat.
I'd therefore like to thank everyone for their Help, especially mr
Klein for urging me to dig deeper!!
If anyone else wants to install some of these seats, I can help.
I have also recorded the details of how to connect power to the ECU,
so perhaps someone wants to post it up on the web somewhere. I'll do a
photo of the connector, draw some arrows on it with Paintshop, and
then save it as a JPG. Mail me if you want it!!
Cheers for now.
Joe Landy.
Peterborough
UK.

 

Hi Joe,

I've installed a Volvo CD changer this summer in my V70 1998. The CD changer
electrical wiring was already installed but I had to pass the sound cable
through the SIP channel.

That's not a big job.

Danny Gagné
Montréal, Canada

 

Hi Danny,
That's interesting. While pulling carpets and trim out of mine looking for
seat electrics, I came across some other spare plugs, with very thin wires
connected to them, and some screened cables. One in particular was green,
and had about 8 ways. I wonder if this is the one for the CD option? The
free plug was clipped into a sort of 'storage bracket' near the handbrake
lever under the centre console. I didn't find anything in the SIP tunnel,
and the cabling for the heated seat (which is original equipment) runs along
the sill, then up under the steering column.
Of course (being in the UK), mine is RH drive and I'm not sure where the
cabling runs for the other seat.
Do you mean there was a full length of cable ready to be plugged into the CD
player? You just has to finish routing it up the rear of the stereo?
I have finished wiring the seat in my own way now, but I'd be interested in
sorting out a CD changer. Bit silly really, the car has done 223,000 UK
miles and I ought to replace it, but now I've got nice leather seats, and
I've done some work for the up-coming MOT (annual safety) test so I'll keep
it for a while yet.
Cheers for the input.
Joe Landy
(replying using my home connection, when it works!)
(Newsgroup access seems to be a bit temperamental.)
Joe Landy
Peterborough
UK.

 

Hello Joe,

Perhaps you could send me the details (or even pics) of finding the
power-cable for the electrical-seat-adjustment.

I have a 1996 (MY1997) Volvo 850 Tdi Manual Sedan and have taken over some
T5-R seats (MY1995) which work great!

I have found out what the 4 wires do, but still use the sigaret-plug to
adjust the seat because I can't find out where to plug the wiring into!

______________
| 2 | 4 |
--------------
| 1 | 3 |
--------------

1. continuous 12V +
2. Empty
3. Mass -
4. OBD-II connection

Thanks in advance,

D. Witjes
webmaster Volvo 850 Club NL
http://www.-nospam-volvo850club.nl/