Question about 1981 Ford F 150

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1990 f150 6 wires for a neutral switch what colors mean what? need to connect the safety neutral switch

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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canbruce75
  • 1776 Answers

SOURCE: removing neutral safety switch

Check out the autozone website at autozone.com and register your vehicle. It is free and will give you access to an online repair manual for the vehicle. The steps for removing the neutral safety switch can be found there. Hope this helped. Best wishes.

Posted on Aug 03, 2009

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ZJLimited
  • 17970 Answers

SOURCE: Looking for the neutral safety switch

Neutral Safety/Back-up Light Switch

This is a combination switch which controls both Neutral Safety and Back-up lamp circuits.

C6 Transmission


8290dff.jpg

C6 neutral start switch

  1. Disconnect the negative battery cable.
  2. Raise and safely support the vehicle on jackstands.
  3. Remove the downshift linkage rod return spring at the low-reverse servo cover.
  4. Coat the outer lever attaching nut with penetrating oil. Remove the nut and lever.
  5. Remove the 2 switch attaching bolts, disconnect the wiring at the connectors and remove the switch.
  6. Installation is the reverse of removal. Adjust the switch and tighten the bolts to 55-75 inch lbs. (6.2-8.5 Nm).
  7. Remove the jackstands and lower the vehicle.
  8. Connect the negative battery cable.
AOD Transmission

e7f4231.jpg

Removing the AOD neutral start switch
  1. Disconnect the negative battery cable.
  2. Raise and safely support the vehicle on jackstands.
  3. Disconnect the wiring from the switch.
  4. Using a deep socket, unscrew the switch.
  5. Installation is the reverse of removal. Tighten the switch to 10 ft. lbs. (14 Nm).
  6. Remove the jackstands and lower the vehicle.
  7. Connect the negative battery cable.
4R70W Transmission

2f68dfc.jpg


Removing the Manual Lever Position (MLP) sensor

As of 1994, the neutral safety switch is referred to as a Manual Lever Position Sensor (MLP).
  1. Disconnect the negative battery cable.
  2. Raise and safely support the vehicle on jackstands.
  3. Disengage the harness connector from the MLP sensor.
  4. Remove the 2 sensor attaching bolts and remove the sensor.
To install:
  1. Install the MLP sensor and install retaining bolts. Do not tighten, the sensor requires adjustment.
  2. Adjust the MLP sensor then tighten attaching screws to 80-100 inch lbs. (9-11 Nm).
  3. Remove the jackstands and lower the vehicle.
  4. Connect the negative battery cable.


ADJUSTMENT

C6 Transmission
  1. Hold the steering column transmission selector lever against the Neutral stop.
  2. Move the sliding block assembly on the neutral switch to the Neutral position and insert a 0.091 in. (2.3mm) gauge pin in the alignment hole on the terminal side of the switch.
  3. Move the switch assembly housing so that the sliding block contacts the actuating pin lever. Secure the switch to the outer tube of the steering column and remove the gauge pin.
  4. Check the operation of the switch. The engine should only start in Neutral and Park .

4R70W Transmission


4cc4151.jpg


Adjusting the MLP sensor

Park is the last detent when the manual control lever is full forward. Return 2 detents toward the output shaft for Neutral.
  1. Position the manual control lever in Neutral .
  2. Insert Gear Position Sensor Adjuster tool T93P-700 10-A or equivalent, into the slots.
  3. Align all 3 slots on the MLP sensor with 3 tabs on the tool.
  4. Tighten the attaching screws to 80-100 inch lbs. (9-11 Nm).

I hope help you. Good luck (rated this help).

Posted on Sep 18, 2009

drsinister69
  • 2317 Answers

SOURCE: where is the neutral safety switch?

Should be mounted on the drivers side of the transmission, usally behind the shifter lever coming out of the transmission.

Posted on Mar 07, 2010

  • 3 Answers

SOURCE: 1971 ford f100 pickup neutral

Ford Neutral Safety Switch; Ford Reverse Light Switch; Backup Light Switch.

The Neutral Safety Switch wires in my 1971 Ford F100 are orange with a blue stripe.
The Reverse, or Backup Light Switch wires are black with a red stripe.

There are two sets of two wires across this combined neutral safety and backup light switch, for a total of 4 wires. Photos are at the end of this post.

The switch for the 1971 Ford F100 pickup truck is the same as in many other years and models. For details, including parts numbers, see the following quote from an expert at Ford Truck Enthusiasts:
http://www.ford-trucks.com/forums/287185-back-up-light-and-neutral-safety-switch-2.html#post5601846

The neutral switch also controls the backup lights, and is the same 1967/77.

C7TZ-7A247-A .. Neutral/Backup Switch (Motorcraft SW-600)

There is no separate backup light switch..except on 1967/68 F350's.

Neutral switch location 1967/77:

The plastic half moon shaped neutral safety switch mounts on the outside lower portion of the steering column (NOT on the transmission!).

It's activated by an inverted Y shaped lever that snaps on the shift tube

D0TZ-7B097-B .. Lever, Neutral Switch Actuator = From FTE sponsor DIRECT FORD PARTS: Ford suggested retail price: $18.72 / FTE member net: $13.23.

The switch is also still available from Ford, but the website is down so I can't post the list & net prices. .

1978 is the FIRST year the F100/350's have the neutral switch mounted on the transmission. __________________

Bill // Retired Ford Parts Manager // SoCal Chapter member // Part Number Research: 1928/2001 FoMoCo vehicles.

IMAGES
jim_pivonka.jpg
Driver side of the neutral / reverse switch showing the travel slot for the switch arm, the return tensioning spring, and the arm.

jim_pivonka_0.jpg
The front, steering wheel side of the neutral / reverse switch after removal from the steering column. The switch's two functions are actuated when the lever in the column moves the switch lever shown here to different positions as gears are selected.

jim_pivonka_1.jpg
The neutral switch is installed on the steering column near the firewall, with 5/8" bolts into the steering column (visible hole) and down column from a rectangular opening in the column housing. The actuating lever for the switch is attached to the gear shift shaft inside the housing; the lever is visibly protruding from the opening in this image.

jim_pivonka_2.jpg
Back of neutral / reverse switch, showing the wiring attachments. Black with red stripe is the backup light wiring, Orange with blue stripe is the neutral safety switch, it prevents starting in gears other than neutral & park.

Posted on Apr 16, 2011

dogturtle84
  • 45 Answers

SOURCE: I have a 1990 ford f150 with a 300 inline 6cyl., I need to bypass the neutral safety switch. What is the wire color combination I need to cross so I can get it started n I

i wont tell you that its unsafe but ill help you fix the problem

Posted on Dec 09, 2011

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What are the wire colors of the neutral safety switch on a 2000 Caravan 3.0 liter with a 4-speed automatic transmission.


Brown wire with yellow tracer shows to be wire color. You can always jump the starter to get it to crank, but, that doesn't mean it will start. In the past I have been lucky, different vehicle, I put the key in on position, jumped the starter relay, the vehicle started, I managed to get it home.
When testing, make sure tranny is in park or neutral and functional parking brake is set. There are safety issues, safety is your responsibility. You don't want the vehicle to move when your working on it.
You realize if you bypass anything, it may start in any gear, if it does it will run over you or one of the kids, anything that gets in the way. Again, safety for everybody is your responsibility.

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The purple wire with a white stripe goes to the starter from the neutral safety switch. I believe it is the yellow wire at the neutral safety switch that will have the the signal from the ignition switch for the start signal. ( Test this yellow wire with a test light while holding the key in the start position to see if it lights to make sure yellow is the correct color ) and join the wires together. This will by-pass the neutral safety switch

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How to wire a neutral safety switch for 96 voyager?


Unless you broke into more wiring than you should have, the tach & fuel gauge should have nothing whatever to do with the neutral safety switch.

Shortly, the neutral safety switch requires only two contacts that should "make" connection when the vehicle is either in Park or in Neutral, but no other time. That connection should energize a relay under the hood that makes it possible for your key to energize the starter solenoid and crank the engine. It (the neutral safety switch) MAY additionally have anything from one to a dozen other connections - to indicate the shifter position, for example.

Some vehicles use two switches, discrete from each other, to function as a neutral safety switch and a shifter position ("PRNDL", pronounced "prindle") switch. Yours apparently has a PRNDL switch separate from your neutral safety switch... so the third contact is somewhat of a mystery to me.

Try to return everything under there to as close to original as possible, and we'll start over with this. If you cut any wires, splice them back together. If you spliced any wires, take them back apart.

To fulfill its purpose, a neutral safety switch needs to have some power coming TO it and some power coming back OUT of it. It acts as a valve for that power - P or N open the valve, all other positions close the valve. So... you need to determine which two contacts are CONNECTED when the shifter is in P or N but are not connected any other time. You'll want a meter, I'm pretty sure. to find those two switch contacts. Identify them, make a note on a slip of paper, take a photo with your phone or camera, whatever. Remember those two.

Now find the connector that used to connect to the old switch. One of its contacts will have some amount of electricity (probably 12V or near to 12V) on it WHEN THE KEYSWITCH IS TURNED TO START. Have an assistant sit there holding the key in the start position while you check for voltage. Voltage should NOT be present on that wire when the keyswitch is NOT in the start position. Remember that wire by color. Write it down on your slip of paper, take a photo, remember it.

You have only one wire left to identify - thats the one that your neutral safety switch uses to energize the relay under the hood, and it's easiest identified by making a quick temporary jumper from the START wire (which you just identified) to each of the other two contacts in the same connector WHILE your helper holds the key in the START position. Transmission really in P, of course, so your helper doesn't inadvertently start the vehicle and turn you into squished sausage. So... just touch your jumper from the START wire to each of the other two wires, one at a time. One of them will trigger the starter motor and the vehicle will try to start. Remember which wire that was - by color, photo, whatever.

Now you have your two valuable wires and you know which are your two valuable connections on the switch. Connect your two valuable wires to the two valuable connections and be happy. Please make the best possible connections by the best means you can muster. You won't want to do this again, at 11:30PM on a Sunday night, in a November rainstorm, in a mud puddle, with lightening crashing around near you, while the zombies slowly creep nearer and nearer to your hiding place. You can see them, you can hear them, and you really need to get away from them NOW. You want it to start NOW. Make that a good splice.

Jul 30, 2014 | 1996 Plymouth Voyager

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Install the new neutral safety switch and do not over-tighten the securing screws, then remove the alignment pin and re-connect the wire connector to the neutral safety switch. (be sure not to remove the alignment pin until the neutral safety switch has been installed)

Check to be certain that the vehicle only starts in "Park" or "Neutral". Here is an image to help assist you, and let me know if you require any further assistance.


f494426.jpg

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1 Answer

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