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speedometer hook up?!

Old 05-31-2009, 06:55 PM
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Default speedometer hook up?!

89 240sx.

how do i hook it into t-56 tranny?
Old 05-31-2009, 08:33 PM
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The speedometer hookup doesn't go directly to the tranny. There is a pin on the PCM that outputs the correct signal for the speedometer. What year harness and PCM are you using?
Old 05-31-2009, 09:33 PM
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the ls1 and tranny is out of 01 z28

stock 89 240sx.
Old 05-31-2009, 09:42 PM
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Similar problem here, I took it out of my harness because I'm using all autometer. Should not have. Anyone have any spare wires you removed with the ends for the PCM? I threw mine away...
Old 06-01-2009, 03:00 PM
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VSS output is C2- Pin 50. Green/White Wire.
Old 06-02-2009, 12:37 AM
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what do i do with it? lol
Old 06-02-2009, 11:29 AM
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You need to hook it to the input for your speedometer. Sorry I dont know what wire that is on a 89 240sx. The wiring diagrams for the 89 240 should show it though.
Old 06-02-2009, 08:08 PM
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I'm not sure if with that year 240, but you may need the Universal speedometer interface from dakota digital. All the threads I've read say they were needed, so you will probably need one also.


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