Neutral safety switch on 79 Monte

[pagrunt]

View attachment 254951I know your not recommending doing this but just to give me an idea could you circle on this picture of what gets connected to each terminal?

That'll be something I would have to have it in front of me to see which switch works for back up or neutral safety.. To see which is which, get a self powered test light & see which on lights it up in reverse & park+neutral. For me in this situation I would make plug & play hanesses to look like a factory set up so I wouldn't have to cut wire.

 

[Montecarlo79]

That'll be something I would have to have it in front of me to see which switch works for back up or neutral safety.. To see which is which, get a self powered test light & see which on lights it up in reverse & park+neutral. For me in this situation I would make plug & play hanesses to look like a factory set up so I wouldn't have to cut wire.

This will help?

 

[pagrunt]

View attachment 254952This will help?

Kinda but you need to know which micro switch is which. I may have a fix for you to make things work. Give me the weekend to dig into some of the spare stuff I in my stash.

 

[Montecarlo79]

Kinda but you need to know which micro switch is which. I may have a fix for you to make things work. Give me the weekend to dig into some of the spare stuff I in my stash.

Looks like there’s no fixing it right now, dad tried to help and snapped off one of the prongs on the top, going to have to order new switch

 

[ELCAM]

Left switch is the neutral safety switch the right is the backup light.

Start with the easy one. The back up light switch goes to the blue and green wire here (Outlined in red) on the backup light switch on the steering column.

Jump those wires and put them on the right side switch. A jumper with two wires 2 male 1/4" terminals on one end and 2 1/4 female terminals on the other end and you don't have to cut the factory wiring harness.

Everything I can find says these switches are rated .6 to 1 amp DC so they cannot really carry the load of just the back up lights which are about 2 amps per bulb. Three choices; push your luck ( they are not usually on very long so you might get away with it.) Use a relay (adds complexity but is trivial to do.) Use LED bulbs they draw very little current and are within the switches specs.

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The neutral safety switch is a bit more involved since these cars did NOT use electrical neutral safety switches.

You will need to mess with the ignition switch wiring first de-pin the purple wire (see the above picture of the steering column and this one).That wire will go to the 30 pin on the relay.

Then take a jumper with a 12Ga wire with two female terminals.

One end goes where you took the wire from the ignition switch, the other end goes to 87 on the relay. No factory wiring was cut.

How you switch the relay is up to you. You can switch +12v or ground using the switch in the shifter and the 85 and 86 terminal on the relay.

 

[Montecarlo79]

Left switch is the neutral safety switch the right is the backup light.


View attachment 254961

Start with the easy one. The back up light switch goes to the blue and purple wire here (Outlined in red) on the backup light switch on the steering column.

View attachment 254962

Jump those wires and put them on the right side switch. A jumper with two wires 2 male 1/4" terminals on one end and 2 1/4 female terminals on the other end and you don't have to cut the factory wiring harness.
View attachment 254963

Everything I can find says these switches are rated .6 to 1 amp so they cannot really carry the load of just the back up lights which are about 2 amps per bulb. Three choices; push your luck ( they are not usually on very long so you might get away with it.) Use a relay (adds complexity but is trivial to do.) Use LED bulbs they draw very little current and are within the switches specs.

-------------------------------------------------------------------------------------------------------------------------

The neutral safety switch is a bit more involved since these cars did NOT use electrical neutral safety switches.

You will need to mess with the ignition switch wiring first de-pin the purple wire (see the above picture of the steering column and this one).That wire will go to the 30 pin on the relay.
View attachment 254964
Then take a jumper with a 12Ga wire with two female terminals.
View attachment 254965
One end goes where you took the wire from the ignition switch, the other end goes to 87 on the relay. No factory wiring was cut.

How you switch the relay is up to you. You can switch +12v or ground using the switch in the shifter and the 85 and 86 terminal on the relay.

Will give this a try, I appreciate the full detail and that this is easy to understand 👍

 

[pagrunt]

View attachment 254954Looks like there’s no fixing it right now, dad tried to help and snapped off one of the prongs on the top, going to have to order new switch

In addition of what all ELCAM has posted I have a gift for you to make things easier that'll work with all posted here with out the need of linkage.

Has enough extras to make a 6 foot long harness to basicly plug & play everything. You'll need to PM a shipping address & I'll pass it forward to you as others here have done for my boy's Monte. You will need to get into that blue connector on the column to depin the purple wire & install the single wire black connector to plug into the harness. Then install the yellow wire's bare terminal back into that cavity in the blue connector. The back up light plug can be pulled from the neutral safety/back up switch & plug it into the harness. The clear connectors are to be put onto the micro switches, dark blue & light green for the back up & purple & yellow to the neutral safety. For a note, I used a yellow wire to copy the manual transmission's set up as it to is an electrical switch like the micro your shifter uses.