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Mystery Harness in 69 Super Bee Dash?

digi_d

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Coming down to the final stretch on a huge bunch of work including all new harnesses, gauge cluster refurbish, revamping nearly everything in the engine compartment, etc (pics promised!). This is my first time going through a muscle car (really, any car older than about 1997) and, while I'm super proud of the fact that I've done it all in my garage, I'm a bit stumped on this one.

Currently installing a new M&H dash harness and I've run into another harness that I both didn't expect to be there and can't seem to find a match for. After a medium amount of sleuthing, I can't seem to pin down a match for this thing or a factory name to search against (looking at map light harnesses doesn't provide a match). This harness is connected (in a roundabout way) to the two-terminal door jamb switches & dash map light. There was also a relay in the mix found floating around under the AM radio, not secured to the console. My assumption is the relay allows the jamb switches to turn on the map light when opened but also allow for independent map light function.

Hoping to find someone with more knowledge & experience than myself (effectively zero :rolleyes:) that can decipher if this is a stock piece, something from a different car, or something home-brewed. By the pictures...

Passenger jamb switch. The loose connector should connect into the dash harness:
passenger jamb.JPEG

The other two yellow wires above: one runs to the driver's jamb switch, the other runs into the connector pictured below (the connector should have two yellow wires but one fell apart when moved). The short black wire piggy backed to the fuse panel's ACC. / RR-ACC lane:
connector for relay.JPEG

The relay this connector was plugged into:
relay.JPEG

This sets of wires also connects to the map light where the red lines piggy back to the fuse panel's ACC. / RR-ACC lane:
map light.JPEG

Over on the driver's side. This connectors goes into the new dash harness and the jamb switch (not pictured, behind my hand) has two leads, one going to the relay connector and one going into the new dash harness:
dash harness.JPEG

It doesn't strike me as stock since it's just a messy bit of work but the car certainly has other questionable electrical decisions from the factory. Any thoughts or help on this one? Time permitting today, I'll doodle up a quick sketch of the connections as well.

Thanks yall!
 
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That is the wire harness that turns the interior lights on when you open the doors The dome light The map light and the side lights on the console all come on at the same time
 
That is the wire harness that turns the interior lights on when you open the doors The dome light The map light and the side lights on the console all come on at the same time

For sure - any ideas on a factory ID for it? When looking at map light harnesses, there's not a match. I can't seem to otherwise find a harness containing the relay connector. Maybe it's just that no one makes it?
 
Second picture with your hand holding connector-
One yellow goose to Left door switch.
One yellow goes to Panel Lamp Dimmer switch.
Purple goes to fuse block Dome Light.
Right Door switch goes to Panel Lamp Dimmer Switch.
This info from manual for Coronet models.
 
Here’s is pic of wiring for map light, time delay relay ( pen point) and related wiring.
I also used M&H dash wiring in my 68 Charger.
I had everything removed when I installed the new harness.

IMG_0471.jpeg
 
Here’s is pic of wiring for map light, time delay relay ( pen point) and related wiring.
I also used M&H dash wiring in my 68 Charger.
I had everything removed when I installed the new harness.
Ah, thank you! In your case then, did the M&H harness account for all the wiring? Looks like I may have a different relay as my connector is different. Will check in on it.
 
Sent some emails to M&H and Evans to see what they say. What I'm trying to get at is - what do you do when this A01 lighting harness is cooked? If the connections aren't included in the manufactured harnesses is the option to simply build it yourself? Where would the plastic connectors be sourced from? Definitely in over my head here.
 
Ah, thank you! In your case then, did the M&H harness account for all the wiring? Looks like I may have a different relay as my connector is different. Will check in on it.
Dash harness was all included from bulkhead to gauge cluster and any accessories such as radio and cig. Lighter.
There are other harnesses needed such as taillights and the harness that goes under drivers seat to shift console.
These two get connected at drivers side kick panel.
 
Sent some emails to M&H and Evans to see what they say. What I'm trying to get at is - what do you do when this A01 lighting harness is cooked? If the connections aren't included in the manufactured harnesses is the option to simply build it yourself? Where would the plastic connectors be sourced from? Definitely in over my head here.
If you’re trying to wire a new harness with existing old wiring you’ll have a harder job than me as I had everything gutted and started fresh.
Plus M&H follows the FSM color codes, easier to trace issues
and/or install.
 
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