Re: Blown power packs
On the powerpacks, there is a white wire and a black/yellow wire. These two wires lead to an internal diode. Using a ohm meter, you should get a reading in one direction and no reading in the other direction. Check that.
Also, the black/yellow wire......... Disconnect that wire from the powerpack(s) and connect a volt meter to the end that is part of the engine wiring harness. Have the volt meter set so that the slightest amount of voltage will register. Check for a voltage reading in all modes ie key off, key on, key in start mode. It would be a good idea to disconnect the cable leading to the electric starter to avoid cranking doing this test.
If the slightest amount of voltage is detected, either the ignition switch is defective or wired wrong or a short exists at some point in the wiring harness that is allowing voltage to cross over to that black/yellow wire.
Also, using that black/yellow wire terminal as a grounding point for any other accessories will allow voltage to find its way to the kill circuit of the pack.
Easy enough to check the ignition switch...... simply disconnect the black/yellow wire at the switch. If the voltage (if it exists) ceases to be, then obviously the switch is defective.
Bottom line..... the very slightest amount of voltage being applied to that black/yellow wire will destroy the pack. A faulty diode will result in both packs firing at the same time.
