Help unravel a few wire mysteries: '70 Charger Rallye Dash

[Coelacanth]

I have my instrument panel out, it's fixed and cleaned up/restored as good as possible. While it was out, I had a good look at the wiring under the dash, and spent a good couple hours following FSM info and a color wiring schematic I had to identify any potential wire issues. There are some obvious connectors with no mates as my car lacks the center speaker, currently has no stereo, there's a connector on the steering column for a cruise control I never had, and probably a connector for A/C, which I never had.

That said, I found a few mysteries that hopefully someone can help me unravel.

My car used to have an alarm system that was long ago removed. I also have removed all the wiring to the stereo and speakers I used to have. But these 3 mysteries have me confused.

This 3-spade connector with parallel-aligned spades has no mate anywhere. Looking at the yellow, yellow w/brown tracer, red and grey (?) wires, does anybody know what this might've been used for?

This single-spade yellow wire hanging off what I believe is the delay-relay, with yellow and pink wires...what might this connect to, if anything?

And lastly, this purple wire hanging loose from the brake switch, where it was spliced into one of the pink wires. This definitely doesn't look original. Any clues what it might've been used for, and more importantly, is it no longer needed, for a car with now-all-original wiring?

 

[BeepBeepRR]

Find out where the violet colored wire goes "last picture" I bet it goes into the driver side kick panel and into the connector that feeds the tail lights. Its either a bypass wire to bypass something that was not working or they needed to use the brake pedal to trigger something.

 

[Bird 426]

The second photo is the harness for the ign switch light. Yellow is a ground circuit? They all get plugged inline on the way to the door switch.

 

[Coelacanth]

Find out where the violet colored wire goes "last picture" I bet it goes into the driver side kick panel and into the connector that feeds the tail lights. Its either a bypass wire to bypass something that was not working or they needed to use the brake pedal to trigger something.

That wire just hangs down and there's a blue tube wire connector on the end of it. I'll need to take a closer look there but I've already reconnected everything with the wiring at the kick panel and didn't see any loose wires.

 

[Coelacanth]

The second photo is the harness for the ign switch light. Yellow is a ground circuit? They all get plugged inline on the way to the door switch.

I didn't notice any empty spades at the wiring at the kick panel, but I'll take a closer look. Seems odd that yellow would be a ground...

 

[Coelacanth]

Thanks again guys, I'm just a bit cautious about connecting the battery until I've figured out as much of the wiring as possible.

 

[Vaanth]

I have my instrument panel out, it's fixed and cleaned up/restored as good as possible. While it was out, I had a good look at the wiring under the dash, and spent a good couple hours following FSM info and a color wiring schematic I had to identify any potential wire issues. There are some obvious connectors with no mates as my car lacks the center speaker, currently has no stereo, there's a connector on the steering column for a cruise control I never had, and probably a connector for A/C, which I never had.

That said, I found a few mysteries that hopefully someone can help me unravel.

My car used to have an alarm system that was long ago removed. I also have removed all the wiring to the stereo and speakers I used to have. But these 3 mysteries have me confused.

This 3-spade connector with parallel-aligned spades has no mate anywhere. Looking at the yellow, yellow w/brown tracer, red and grey (?) wires, does anybody know what this might've been used for?
View attachment 1916710

The three terminal connector is for the key-in buzzer. The following image shows an example of the buzzer:

This single-spade yellow wire hanging off what I believe is the delay-relay, with yellow and pink wires...what might this connect to, if anything?
View attachment 1916711

For the time delay wiring, pink is the power feed, yellow with tracer is the door switch feed(s), and yellow is the feed to the ignition switch lamp. For 1970, there should be a yellow wire with bullet connector going to the column for the column mounted switch lamp. The spade terminal was used in 1969 for the dash mounted switch. It looks like it is connected with the other yellow wire, but if it has a tracer on the other side and is connected with the other yellow with tracer, it is for connecting into the door switch wiring. It does not appear in the 1970 Charger service manual.

And lastly, this purple wire hanging loose from the brake switch, where it was spliced into one of the pink wires. This definitely doesn't look original. Any clues what it might've been used for, and more importantly, is it no longer needed, for a car with now-all-original wiring?
View attachment 1916712

The purple wire is not original and has been spliced into the pink wire. The pink wire is powered all the time, so it was likely added as a full time power tap, perhaps for the removed security system.

 

[Coelacanth]

Awesome Vaanth, thank you. I figured that purple wire might've been for the old alarm system.

I'll have a closer look at my steering column for anything related to the yellow wire, but I have a feeling it's a remnant from a 1969 dash harness and doesn't do anything with the 1970.

As far as the key-in buzzer goes, I might have an update on that later this evening.