Help with wiring harness

[Heywodja]

I am working on a 73 challenger. I bought a harness off of someone for my rallye dash. Everything matches up perfectly until I get to the bulkhead connector area on the left lower left side under the kick panel. The attached photo shows a large white box with an electrical board inside..
Anyone have any idea what this is or what car it is for?

 

[quapman]

That's a 74 harness with the seat belt interlock mess.

 

[aussiemark]

Could the wiring harness be unwrapped and the seat belt interlock wiring removed then wrap the harness back up?

 

[Heywodja]

A mess is right, it is in great shape otherwise

 

[quapman]

I had a 74 several years ago and I recall that bypassing the mess wasn't a big deal. One of the yellow underhood wires went to the relay instead of the reset button, but you probably don't have any of that in your 73.

 

[Heywodja]

It is probably way more hassle that it is worth... even my cut up butchered harness that i currently have will be a better option..

Thanks for the help..

 

[Cudafor36]

I took out my little box years ago and the new year one harness I have installed didn't have it. Just keep it bypassed and wrapped up