hako
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The problem could also be the thick wire which connects to the rear of the alternator - this has been known to overheat (it carries a heavy load) and then the copper becomes brittle and crystalizes which results in either a complete or partial break in the wire.
The result can be anything from no charge from the alternator to an absolute dead short if the wire snaps off.
To check, remove the plastic engine cover and locate the wire at the back of the alternator. Wiggle it about....it should be firm yet flexible....look at the insulation to see if it looks burnt....the nut that clamps the connection should also be tight.
If any of these do not pass muster then replace or whatever.
The result can be anything from no charge from the alternator to an absolute dead short if the wire snaps off.
To check, remove the plastic engine cover and locate the wire at the back of the alternator. Wiggle it about....it should be firm yet flexible....look at the insulation to see if it looks burnt....the nut that clamps the connection should also be tight.
If any of these do not pass muster then replace or whatever.