Well, I got to the Mav today, and I hooked the floorshift Mustang neutral safety switch to the wiring harness, and now the switch functions as it should except for one thing: it will turn over in gear. I hooked the wires up correctly, I am positive of this. I checked the wiring diagrams many, many times, and everything works how it should. When you turn the key to the "On" position the power goes to the switch and then when it is in park or neutral it makes a complete circuit and goes back out of the switch (how it should). The backup lights work now, which will be nice, but why will it start in gear. Don't worry, I took the coil wire of before trying to crank it. Is the switch defective? Or is there something wrong with my starter relay, and it transferres power to the starter even though it is getting the signal that it is in gear? I think it the something to do with the relay, because the switch functions perfectly and makes a circuit when it should, and doesn't make one when it shouldn't. Thanks. -Corbin
Only thing I can think of is unhook the line that you are switching through your neutral and see if it still turns over. If if does, your switching the wrong circuit.
So you mean I should try and unhook the wires going through the park/neutral circuit, and if it still turns over I have the wrong circuit? What other circuit is there? I think I know what you are talking about, but I am still a little confused to what exactly you mean. Thanks. -Corbin
Well, I went to mess with the Mav again, and I found some more information. When I disconnected the wires to the neutral/park circuit it will still start up. On a whim I unplugged the switch at the connector under the dash and now no matter in what gear it will not start. There is one wire that comes out of the plug and then immediatly loops back into the plug and then into the harness. It is red if I can remember correctly. With this disconnected it will not start in any gear even if the switch is hooked up. I think it is some sort of wierd ground thing because it has no positive power going through it. I am starting to get really confused. I want the switch to work, and I hooked the circuits up correctly but the red wire loop is messing it up somehow. Anyone know anything about this, or where I could find someone who does? Thanks. -Corbin
Would it be difficult to get another neutral safety switch? I once spent months diagnosing my 67 mustang electrical system because I thought the headlight switch was good. If you can, you should eliminate the switch. By doing this, you will know for sure if it is a problem with the switch or not. are you sure that the red wire has no power to it or not? You can use a light switch in your house as an example. The light switch has 2 power wires going to it. when you turn it on, it completes the circuit, when you shut the light off, it breaks it, and this is likely how your neutral safety works. Perhaps the red is power, and by disconnecting it, it grounds out, or makes it think it has.--I would still check the switch itself.
That connector should be a 4 pin connector. That looped wire is your neutral safty circuit. You need to cut that loop and splice some wire to the ends and run them through your new neutral switch. The other 2 wires in that connector is your back up light circuit.
I figured that the looped wire was something to do with the neutral switch, but why was it looped back originally? There are only four wires going to the switch, but with the wire loop coming out it makes it a six prong connector under the dash. My questions is, why would it be looped from the factory? If this wire was needed to go to the switch, why didn't it? I hooked up the four wires that went to the original switch to the four in the Mustang neutral switch, and the backups work great, and only in park and neutral does it complete the circuit to allow it to start. Everything works great except for this looped wire thing. How should I try to hook this up? Right now I have the switched power going into the switch for the backup lights, and then the wire that goes to the actual lights is coming back out into the harness, and to the lights. They work perfectly. Then I have the switched power going into the actual neutral circuit. Then there is the wire that supposedly goes to the starter relay and only allows power to be transferred when it is in park/neutral. It only completes the circuit where it is supposed to, so I am pretty sure the switch is fine. With the wire arrangement I just described, where should I hook the ends of the red looped wire if I need to cut it and hook it up. I can do this, but the most confusing thing is why Ford looped it back. My car is a 73 and used to have the auto shifter on the column. Does anyone else have the same looped wire on their neutral switch connector? If so, could you see if the switch works? Thanks. Make sure to disconnect the coil spark wire if you try. Thanks for the help guys. I am getting closer to the solution, but that looped wire is really throwing me off. -Corbin
