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Help wiring aftermarket th400 shifter to P/N saftey switch

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Old 08-26-2010, 05:01 PM
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Default Help wiring aftermarket th400 shifter to P/N saftey switch

Alot of folks in this section with TH400's and aftermarket shifters etc. I am putting a B&M pro ratchet in my 93 trans am. The shifter comes with 2 microswitches, 2 terminals on each one. One for backup lamps, and one for neutral saftey. according to the instruction i need to find the 2 wires for the N safety circut and connect them to the appropriate switch and also 2 for the backup lamps.

ANyone have any insight to this. What wires do i need to clip off the stock connecter and connect to the B&M Neutral safety switch, and likewaise for the reverse switch? THANKS!!
Old 08-26-2010, 05:05 PM
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Was the car an A4 or M6 before the Th400 swap?
Old 08-26-2010, 05:11 PM
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the car was an A4. it was a 93 with a 4l60 non e
Old 08-26-2010, 06:02 PM
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Purple trigger wire for thestarter solenoid off the ignition switch just split it with the aftermarket switch on the shifter
Old 08-26-2010, 09:33 PM
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In my 99 I used two wires from the flat 6-pin connector on the front of the factory shifter. Pin E (purple/white) and pin F (green). I ran those two wires to the terminals on the neutral safety switch. For the last hour I've been looking for the schematic or connector end view that I used to figure that out but I couldn't find it. It's somewhere in the service manual.

Not sure if your 93 would be the same.
Old 08-26-2010, 09:39 PM
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If you go to the auto trans section there is a stickie and a picture that tells you which wires they are.
Old 08-27-2010, 07:04 AM
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yep i found the info last night in the sticky. thanks guys



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