87 300e quick questions

[tjh]

Just bought an 87 300e. It has a smog problem I'll post about later, after I've spent some time checking things I found on other threads here. (Love this forum!)

However, just a couple of quickies.

1. Under the front passenger carpet there are two things I don't understand.

1. A black box with a multi-pin connector. Bosch audio component I think - but what is it?

1. Another small red box, possibly a connector cover? Could this be the 02 sensor's connector?

2. The fuse for the front right / left rear windows blows repeatedly. If I short the fuse connections, the windows perform normally. Put a fuse in, it blows instantly on pressing the window switch. Any tips?

Thanks in advance!
tjh