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Rear seat/bed wiring question
#608906 April 01st 2013 1:18 am
Joined: Oct 2001
Posts: 663
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Hi friends.

For my 77 Dodge, I picked up a matching set of leather captain's chairs and a rear seat......(I haven't cleaned them yet) They came out of a 91 GMC van I think.
[Linked Image]

Before I measure and drill bolt locations for this rear seat I need to 1) check the operation of the motor 2) be able to measure the correct length of the seat while extended in bed position, 3) have a beer, and 4) figure out what kind of switch to use with this bad boy.

But it's quite heavy and I can't open or close the seat from this position without toggling the motor.

[Linked Image]

There is this control module on here and I can plainly see where the +/- goes to the motor. And I see where the switch would plug in. I see a 12v, a ground, and a "MPX BUS" (whatever THAT is??). The questions are: a) what kind of switch do I run to make this work? b) can I buy (or where to find) a male end of the three prong plastic connector to splice into a new switch? and c) can I run a direct hot 12v to get it to move temporarily to check operation and close/open the seat without damaging the motor?
[Linked Image]
Thanks in advance!


[Linked Image]
Chris (The Ravishing One)
1977 Dodge B200 Shorty V8-360 4.10 rear w/OD A518 tranny
1993 Dodge B250 Hi-Top V8-318
1994 Dodge B250 Lo-Top V8-318 (RIP 1998-2013)
Re: Rear seat/bed wiring question
RavshngOne #608972 April 01st 2013 2:40 pm
Joined: Apr 2010
Posts: 2,847
Likes: 42
W
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I am afraid I can't help you. My bed motor had no control unit, just two wires entering it, coming from a rocker switch which just reversed the polarity and feeding it 12 volts direct would suffice

My bed is long gone, but I kept the motor and actuator screws. It opens up the sliding window behind my fridge on the original switch.

There has to be two wires running into just the motor itself. I'd try feeding that 12 volts directly and if that works as it should, perhaps remove the control unit if you cannot find a schematic for it.

My switch looks like this:
http://www.northerntool.com/shop/to...329&gclid=CImfpIWPqrYCFQThQgodaGsAaA

Re: Rear seat/bed wiring question
RavshngOne #609080 April 02nd 2013 11:54 am
Joined: Oct 2001
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Thanks for the link to the switch wrcsixeight.

I've been hesitant because I don't understand how the motor works and how to wire it if I run direct to it. What makes the motor run one way, off, and the opposite way? Polarity of the 12v current?

And, the control module's presence made it seem to me that I couldn't just run a switch direct to the motor for some reason.


[Linked Image]
Chris (The Ravishing One)
1977 Dodge B200 Shorty V8-360 4.10 rear w/OD A518 tranny
1993 Dodge B250 Hi-Top V8-318
1994 Dodge B250 Lo-Top V8-318 (RIP 1998-2013)
Re: Rear seat/bed wiring question
RavshngOne #609084 April 02nd 2013 12:55 pm
Joined: Oct 2009
Posts: 3,772
pooh-bah
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pooh-bah
Joined: Oct 2009
Posts: 3,772
You need a double pole double throw center off momentary contact Switch.
Instructions
Things you need

Center-off double pole, double throw switch
Soldering iron
Silver core solder
Wire

1

Look at the contact poles on the bottom of the switch. As you hold the switch, bottom up, there are two lug terminals on the left, two lug terminals on the right and two in the centre of the bottom of the switch.
2

Solder the lead from your power source to the lug terminal on the upper left with a soldering iron, using silver-core solder. Solder a length of wire onto the lower left lug terminal that's long enough to connect to your boat's common ground.
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3

Make two "jumper wires" from short pieces of wire by stripping a bit of the insulation from both ends. Solder one end of the jumper wire to the lug terminal on the upper left end of the switch. Solder the other end of that jumper to the lug terminal on the bottom right of the switch.
4

Solder one end of the second jumper wire to the lug terminal on the lower left end of the switch to the lug terminal on the top right end of the switch with jumper wire.
5

Solder the wires from the motor to the centre lug terminals of the switch.
6

Check the position of the switch, to ensure that the switch is in the centre "Off" position. Solder the lead from your power source to the lug terminal on the upper left with soldering iron, using silver-core solder. Solder a length of wire that's long enough to connect to your boat's common ground onto the lower left lug terminal.



The only Stephentown on earth.
I don't mind Coming to work,
but that 8hr wait to go home is a bitch.
No matter how little I do,
I always feel I could do less.
"The only thing wrong with a perfect drive to work is that you
end up at work."
NOVA VANS
1990 Dodge B150
Re: Rear seat/bed wiring question
RavshngOne #609114 April 02nd 2013 4:41 pm
Joined: Oct 2001
Posts: 663
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Posts: 663
Ahhh I see.....the wiring for the switch would look similar to this:

[Linked Image]



[Linked Image]
Chris (The Ravishing One)
1977 Dodge B200 Shorty V8-360 4.10 rear w/OD A518 tranny
1993 Dodge B250 Hi-Top V8-318
1994 Dodge B250 Lo-Top V8-318 (RIP 1998-2013)
Re: Rear seat/bed wiring question
RavshngOne #609139 April 02nd 2013 6:34 pm
Joined: Oct 2009
Posts: 3,772
pooh-bah
Offline
pooh-bah
Joined: Oct 2009
Posts: 3,772
Yes that's it.and the right Switch(spring loaded)


The only Stephentown on earth.
I don't mind Coming to work,
but that 8hr wait to go home is a bitch.
No matter how little I do,
I always feel I could do less.
"The only thing wrong with a perfect drive to work is that you
end up at work."
NOVA VANS
1990 Dodge B150
Re: Rear seat/bed wiring question
RavshngOne #610156 April 09th 2013 3:28 pm
Joined: Oct 2001
Posts: 28,125
Madman!
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Madman!
Joined: Oct 2001
Posts: 28,125
You can prolly get that plug through Granger or maybe Mcmaster Carr.

The seat looks like it may have been made by Superior seating. Check their web site and give them a call they may be able to help you out as well.

Yes, in a DC motor all you have to do is reverse the pos. and neg. and the motor turns the opposite way.


Ken Schwarz
Tricky Truckers, N.J.
Van Clan Plus One, Canada
Manse Vans, Finland
Rebel Vanners, N.J. "USA"
Toopa Sinner Tribe, N.C.

www.showvans.com

http://www.cardomain.com/ride/360991

[Linked Image]

"Coolness ALWAYS trumps comfort"

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