Anyone know the wiring color code for an EQ-611 Volvo equalizer? It’s from a 1992 740. This is a basic equalizer – no lights or LED display, just seven knobs that slide up and down to change the level. The eight pin DIN connector has five wires: red, yellow, green, white, and black. There’s also a separate red and black wire which must be power and ground.

I assume the five wires of the DIN connector are:
1. Left in from radio
2. Left out to radio
3. Right in from radio
4. Right out to radio
5. Common

Thanks,
Michael
Melbourne, Fla - 1985 740 460k, 1988 780 Coupe V6 190k, 1992 745 200k