Wiring for AM/FM cassette connector jumper plug?

[YYZ]

Would someone please refresh my memory on the wiring within the jumper plug for AM and AM/FM E-body radios with the cassette pigtail?

I don't mean the connector from the radio itself, but the little black plug or cap that's used to block it off if there is no cassette player hooked up.

IIRC the pins are jumped as follows:

1-7
2-6
3-5
Pin 4  - no connection.

TIA

[Bullitt-]

 a quick search found this 
https://www.forbbodiesonly.com/moparforum/attachments/3rdgenradiowiringa-jpg.1109006/

[YYZ]

Thank you.  It's interesting that Chrysler uses a different callout pattern for the pins, however, I think that this will work.

Pins 4-5 for the right audio channel in/out correspond to 3-5 for the modern version

Pins 1-3 for the left audio channel correspond to 2-6 in the modern.

Then it's a question of whether the power circuit needs to be closed between pins 6-7 in the old and pins 1-7 in the modern.  However, that's easy enough to isolate.