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#1
08-12-2008, 09:57 AM
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83 300SD door lock controller
I suspect that some electrical switch controlling the door locks is drawing amperage through fuse 13 and draining my battery The drain started when the doors wouldnt lock. The radio and seat memory are also on this circuit but I think the prime suspect is the door lock system Is there an electric switch controlling the vacuum system ? If so where is it's location?
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#2
08-12-2008, 10:21 AM
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On that car there is a switch in the drivers door that starts the pump that is next to the spare tire. The pump has a time out circuit in it. This system gets power through the J relay in the fuse box. If you are getting a power drain from this system I would look at the wires where they go from the drivers door to the door frame. These wires brake over time (they are 25 years old and get bent every time you open the door). If one of the wires is shorting out it would drain the battery.
__________________
1983 300SD 200000miles
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#3
08-12-2008, 10:22 AM
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the trunk key, and the driver's door key have electrical switches to the trunk pump.
seat memory? I thought only the SDL's had that...
__________________
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!
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#4
08-12-2008, 10:56 AM
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Quote:
__________________
1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver 1982 300SD - 232K miles - Wife's Daily Driver 1986 560SL - Wife's red speed machine
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#5
08-12-2008, 11:24 AM
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Door key wire a possibility
Sounds possible. I woner what the color code is on that wire to these keys in the door . The trunk one I can probably trace but the bundle through the door is tough as I would have to take off the door panel. I'll try searching woring diagrams .
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#6
08-12-2008, 01:54 PM
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The wires on mine are blue and yellow and there is a brown ground wire but I am not sure if that goes into the door. I have had to splice in new wire on almost all the wires that go into the drivers door.
__________________
1983 300SD 200000miles
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#8
08-14-2008, 10:33 AM
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Quote:
http://www.peachparts.com/shopforum/showthread.php?t=105297 Then here: http://www.pauldrayton.com/uploadfiles/merc/Service/W123/Index/617Tindex.html
__________________
1984 300SD Turbo Diesel 150,000 miles OBK member #23 (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination
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#9
08-14-2008, 10:48 AM
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Try looking at #13 in this post. I put a diagram for a 1983 300SD and some other info on there.
http://www.peachparts.com/shopforum/showthread.php?t=150356
__________________
1983 300SD 200000miles
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