Re: Husqvarna LTH 120
Sounds good, now take off small black wire to solenoid tab. Put multimeter red lead on that wire and multimeter black lead on negative battery terminal, measurement is in Ohms NOT voltage. You should be close to 0.00 Ohms may very a little with digital multimeter.
If that is good reconnect and try to start it like you normally would, test starter side on solenoid post when key is turned, you should have 12+ volts. If you do not have 12+ volts then you need a new starter solenoid.