Volvo 850 Charging problem

 On cars of this type and age, the crimp on the positive terminal can fail turning the positive wire to the battery into a resistor rather than a wire.  This is diagnosed by measuring the charging voltage on the battery and giggling the wire (it will jump around, and not remain at the required 13.8 V), and by noticing that the wire itself is hot.  Volvo recently released a fix for this, and previously the shop had to remove the entire wiring harness, at great expense, to fix it.