Clean all connections and rust proof them both at battery, engine ends of battery cables. The hot one goes to the starter and be careful not to break it off - NOTE : Do this with battery neg disconnected. Also - engine or direct from battery must connect body of veh to ground and that needs to work properly too.
For rust/corrosion protection I like silicone grease. The starter motor/at solonoid should be dealt with carefully as you got some years on this. Penetratings oils etc may help, if it breaks - you can replace just the piggy backed solonoid where the wires all go. Good luck,
Tom Greenleaf - MetroWest Boston - USA
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