Kenwood Stereo in 5KCS problem

[Steve Sherman]

Thanks Ameer:

I did check (best I could with a cheap digital multimeter) and the
current out of the antenna lead stabalizes at ~50ma.  Which I though
should be OK.  You may have something in that this meter is too slow to
register an inrush current, but since the unit will come up with sound
playing with the rear amp lead connected to the antenna lead but the
rear speaker connections cut, I tend to think it is something else.

One other thing I tried, was to connect the + lead of the rear speakers
to the Kenwood through various resistors (from my junk box collection).
An odd thing was that even with a 50ohm resistor in series with the rear
speaker (to rear amp) lead, the problem did not go away, AND the
resistor got very WARM (this was a 1 watt resistor).

This leads me to think that the excessive current draw is happening from
the kenwood to the rear amp inputs.  I'm not an EE, but it would seem
that the BOSE rear amp's inputs are sucking current. Probably need a
scope or the like to see if the excessive current draw is DC or AC.  All
the more odd in that only one line per channel is being connected (as
per archive post).  So the ground/return current path would seem to be
to chassis ground...  Perhaps the rear amp uses chassis ground for one
signal line, and thus shorts out the Kenwood amp, as one is not supposed
to introduce a chassis ground into the speaker wiring.

Any thoughts on this?  Do any listers know what the correct input
impedance of the factory rear amp is and what a "good" mathching
transformer/cap would be?

TIA