I'm trying to take the passenger front seat out of the 84SD parts car. The seat is forward and down. Most of the dash switches & window are out. I installed the seat fuse and put known good relays in but the seat won't move back.

I don't want to do a lot of trouble shooting, only move the seat back and get to the front bolts. I also don't want to hack the seat up.

Is there an easy place to tap into the harness that bypasses the fuses and switches that will move the seat? I have the battery out of a running car and plenty of wires and alligator clips.

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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.

reach under the front of the seat, under the carpet cover spring clipped thing, there is a plug, open it up and you will see the wires that control the motors. play around with them until you find the set that moves the seat back.

I'm sure there is a pinout on here somewhere to identify exactly which wires go where, but it's not hard to figure them out, they are bundles of pairs of wires, positive on one neg on the other, just touch them to the battery, and a motor will move, if it's not the right one, go on to the next pair.

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

The electrical manual for the gen 1 126 is on Startek. That should help you figure out what is what on that connector.

These motors are reversible so both the hot and ground comes from the switch. If the motor is going in the wrong direction, reverse the polarity when you jump power to the connector.

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The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech

Ditto what John said.

1&2 is the backrest motor
3&4 entire seat
5&6 rear
7&8 front

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Sam

84 300SD 350K+ miles ( Blue Belle )