closed switch to open signal

Hello Everyone.

Newbie here, found myself registering after I realized that I found links on this forum for several questions over the last while during my remote starter.  Thanks to everyone on here for having such information.

So, I have installed a remote starter (Compustar CM6200) with Blade AL bypass, and Drone Mobile system in my truck.  At this point, all is good.

What I am trying to do is figure out the wiring for a neutral safety switch.  I understand, and have properly functioning the reservation mode, and fully understand the consequences of having remote start on my manual transmission truck.

I have at this point fabricated and installed a ball switch on my gear box shifter, which operates as discussed below.  I have GWR available on my brain.

Below lists point form of my objectives.

Ball Switch - When truck is in neutral, switch closed, any other position, open.  Reason for this, if switch fails, or has any issues, closer circuit should not be active, therefore, should disable my remote start.  Sort of a fail-safe such that if not 100%, it's 0%.

GWR (Ground while running) - Available and operatable from CM6200 brain.  Only shows ground feed while remote start is active - Open when truck is off, Open when key is "On".  I would like to use this, such that I suspect a relay or 2 will come into play for this and would prefer the system to just do a "check" for neutral, instead of powering relay coil on and off while driving the truck, and also, do not want it powered while engine off (battery drain).

Hood Switch Pin - Operatable now.  Requires to be Open to enable remote start.  When it sees ground, constant or momentary, remote start is disabled, and reservation mode (due to manual transmission) is cancelled.  This is the tricky part for me, because circuits I have started with have all yielded somehwere in the timing of it all, a ground connection to this wire.

       So this is my biggest problem really, neutral swtich is "closed" when ready to start (neutral), yet my hood pin switch requires "open".

Hood Swtich Pin - Continued - I would like to use this particular wire simply because my Drone Mobile App can retrieve the status of my hood.  Therefore, if my truck is in gear (my reservation mode will be cancelled and won't start), it will tell my "hood open", therefore, I can take this as a "truck in gear" status (though it could be my hood as well, but you know what I mean).

Have been thinking for days, just about full of gray hair now!  Jk, but i certainly would apprecaite any input to this scenario.  Slightly easier terminology is apprecaited as I am not exactly trained in this stuff, just stubborn and persistant enough to keep plugging away at it until it works.  And its kinda fun!

Thanks everyone!  Sorry for the length, but one thing I have learned is more info the better!

Weird, before I posted this, I was re-reading and thought of a possible way.  I have it drawn out, forgive the diagram, not exactly "professional".

I am believing this might work, but would like confirmation....what do everyone think?  Thanks!!!

Snooky

Surely simply running pin 2 CN3 light blue to ground via your switch will do all you want? Since you broke the rules by not mentioning your vehicle, I suggest you access the engine management pin-outs, there's often a NSS already in existence, e.g. Nissan, Subaru etc.

Completely apologize about not mentioning the truck, got totally overwelmed with the contents of the post and forgot the basics!

2008 F350 Superduty, 6.4L Diesel, Manual Transmission

Regarding the NSS, my understanding is that there is none on the truck already, except of course for a reverse gear for the lights.  I havn't found any information related to that.  Hence the reason I am going through all of this trouble.

Again, sorry about the vehicle information.

Snooky

The reason I mentioned this is the hood switch has to see an open circuit and the neutral safety a ground (0v). Thus going through your switch to ground WILL do the trick. The point being that although I might well be wrong, many vehicles have inbuilt NSS systems and it's worth checking, either on-line or your local library. Normally on the engine ECU. I thought so about vehicle exclusion, the rest of your post was too thorough. A reverse light switch is NOT the same as a neutral safety switch.

But it may be physically combined with the reversing light gearbox switch. That is, a 4 wire switch instead of two.

I think I understand your first bit there, however the problem with that is my switch is a closed circuit when in neutral.  Putting this to ground would be a 180 of what I need?  Maybe I dont understand.

I hear ya about reverse light / switch.  What I really meant was, I could easily use the reverse light as a signal, however that would only cover my reverse gear, and not the rest.

Lets just say for kicks and giggles, that there is no NSS on my vehicle, may I have your opinion on the diagram above?

If that does suffice, I just want to be sure that it will be safe and not drain my battery.  Which I believe it should be good?

Thanks!

Snooky

A closed circuit = ON. That is joined together, NC etc. Your diagram is unecessary.

I don't understand your post. I know that a closed circuit has "continunity" per say.  But that is the problem.

If I don't use that diagram, then when in neutral, my switch is closed.  Therefore, if it is going to ground, my hood wire will have ground when in neutral, which means my truck will not start - reservation mode cancelled.

Unless, you are referring to your suggestion about the light blue wire above.  Which I believe to be the brake wire.  Does that light blue wire see ground when brake pedal is pressed?  12v? or open?  I need to look into that particular scenario more to understand.

Snooky

Forget the hood wire!!! Use the wire I mentioned, if it doesn't see ground then the RS simply won't work.

Please forget my last post! I was wrong, this is what you need to do:- DD5_nss.bmp At rest the NSS (or ebrake) wire sees 12V+, thus disabling the RS. The black GWR wire changes the relay so that 30 is now connected to 87. Of course that wire at 30 won't see a ground, STILL disabling the RS until the gear shift is in neutral. As a double redundant safety, I just revised the diagram allowing blocking diodes. :- F6E_nss.bmp Sorry about that, it's dinner time here and I'm thinking this through and designing the circuit as I write!