The 0.07 reading is on the 20kOhm range. So it's 0.07 kOhm or 70 Ohm. The 200 Ohm range is reading over range so you have at least 200 Ohms in the circuit. As far as your alternator is concerned over 200 Ohms is the same as not connected. Was this measured from the alternator big lug to the battery +ve terminal? If it was from the alternator to the battery +ve terminal then you have an open connection somewhere between the two.
If you have an open connection between battery and alternator, but you can still start the car then the good news is the open connection is probably between the starter and the alternator. There should be a fairly large wire running from the alternator to the starter around the passenger side of the engine bay. Follow this wire till you find your open connection.
The other reason to check this wire is your alternator was recently changed. It's amazing how often new faults start in the last part of the car touched.
Dishy
If you have an open connection between battery and alternator, but you can still start the car then the good news is the open connection is probably between the starter and the alternator. There should be a fairly large wire running from the alternator to the starter around the passenger side of the engine bay. Follow this wire till you find your open connection.
The other reason to check this wire is your alternator was recently changed. It's amazing how often new faults start in the last part of the car touched.
Dishy