Green = 12v Constant Power
Blue = 12v Accessory
Yellow= Panel Lightning

The speakers are connected through the DIN cable.

Thank you lummert and dmg4 - I ended up installing the 205/70R15 Geolanders and they perform well for my needs

This diameter must be the largest acceptable on a stock vehicle because there's just a .6" gap left between the tire and the front spring bottom support plates.

I'm upgrading a TD-3141 unit from a 1984 760. I've compiled 20+ information files and read countless forum post reads from all over the web –MVS included– and I'm yet to understand the wiring schematics on these units. Could someone please let me know what each color wire does on the image below? TD...

Thank you for your input - I'll go ahead and order the 205/70R15

The few people I talked to prefer the Yokohamas over the Pirellis so I'll go with those.

I need to switch tires from touring to all-terrain on my '91 940T wagon, but would like to avoid lifting it or change wheels to 16". Smallest all -terrain tire size I've found is  205/70R15, linked below. Anybody knows if these will fit on stock height and wheels (15")? Yokohama Geolandar ...