It worked -- all is good.

Thanks, to all!

Thanks, scot850 —
Trying it now!

I do.

scot850,
I see no external amp, but it may be hidden down by the heater core.
The car does have a 6-CD changer in the trunk.
I chose the SC-811 because it was cheap, and I am simply seeking a working cassette player, for using a bluetooth adapter.

I'm just trying to replace the SC-710 with a unit that has an operating cassette player, so I can use a bluetooth adapter. Pics are attached. The SC-710 is silver, and the SC-811 is black. When the SC-811 is installed, with the amp port empty, the display reads "OFF", and it is otherwise u...

I am attempting to replace my SC-710 radio unit with an SC-811 unit, in a 1996 850.

Can anyone advise how I might find an adapter or other solution to overcome the lack of an "amp" wire and plug to go in the "amp" port in the SC 811?

Thanks!