Please Help 240sx manual swap wiring question

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Carbineone
Posts: 14
Joined: Sat Jan 30, 2010 3:18 pm
Car: 91 240sx

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Hi I have read for hours the past posts here and cannot find a answer to this only get more confused.What we have is a 1991 240sx that was originaly a auto trans and we swapped in a manual five speed.Problem is there are supposedly two wires somewhere that need to be spliced together to bypass the neutral safety switch to get the car to start..I have seen some who say these plugs are under the hood somewhere,some that say they are on the right side inside the car.Some refer to them being inside on the left side of the dash.Is this plug first off in the car and where?.If under the hood where?Some say they are a black and brown wire that needs to be connected together and some say black and white..Like I say I just got more confused with every thread I read about this.This should be very simple but all threads just seem to assume you know where this plug is located.Even the threads with pics are no good if you do not know at what part of the car they were taken..Thanks and please explain clearly where this plug is exactly located and what color and how many wires are on it.Thanks and please help asap as this is frustrating...


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sx moneypit
Posts: 8911
Joined: Wed Aug 26, 2009 2:54 am
Car: 2010 Nissan 370Z
1986 Toyota MR2
Location: Memphis,Tn.

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The plug you need to splice is on your old auto trans wiring harness.It is a two wire plug that plugged into the starter neutral switch.The wire colors are black-white and black -yellow.

Carbineone
Posts: 14
Joined: Sat Jan 30, 2010 3:18 pm
Car: 91 240sx

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Hi,well there is no two wire connctor on the old auto trans that has these two wire colors you are describing.There is a sensor on the auto trans way to the rear right side that has two wires going to and they are black and brown.I just need to simply know where the wires are to bypass the starter safety switch,do not care if it starts in gear or not..just need it to turn over and start.

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sx moneypit
Posts: 8911
Joined: Wed Aug 26, 2009 2:54 am
Car: 2010 Nissan 370Z
1986 Toyota MR2
Location: Memphis,Tn.

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The switch i am talking about fits over the selector shaft on the transmission.

Carbineone
Posts: 14
Joined: Sat Jan 30, 2010 3:18 pm
Car: 91 240sx

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I do not know if I am totally stupid or what but there is no two wire connector in that area.There is only a whole harness with about ten or twelve wires there..

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sx moneypit
Posts: 8911
Joined: Wed Aug 26, 2009 2:54 am
Car: 2010 Nissan 370Z
1986 Toyota MR2
Location: Memphis,Tn.

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Do any of the wires have the colors i am talking about?I can't tell by the diagram i have,but does the switch a wiring harness coming off it or does it have a place for a plug?

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snake240
Posts: 344
Joined: Thu Sep 25, 2008 4:16 pm
Car: 92 hatch SR20DET

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It is a plug that comes out of the bottom of the relay/fuse box by the battery tray.black/white and black/yellow.

Carbineone
Posts: 14
Joined: Sat Jan 30, 2010 3:18 pm
Car: 91 240sx

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Thanks fellas,Snake that was the answer I needed.Found the plug under the fuse box and hooked the black and white together and it fired right up..Thank You very much...I am helping my son out and know little on this new car stuff and he knows even less at 17....Bruce


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