Join Date: Jan 2014
Location: British Columbia
Motorcycle: 2003 GSX-R600 (K3?) Alstare
Re: Please help!
remove the Rectifier, Key bike on. is the Neutral light active? what is your battery voltage? 12V? remember that number.
With Everything Plugged in and key on... add a battery charger if you need to maintain battery while testing, Voltage drop must be done with circuit loaded.
First lets verify its not a primary ground issue. Negative Voltmeter lead to the battery negative terminal. this is the direct battery terminal, must be on the lead lead of the battery. Positive lead on the top cable contact that you would connect to the battery. This should be 0V, anything over 0.5 ish volts is going to be a concern. Anything more the contact is the problem, if not then primary ground is not a concern
Next take the fairing off and find your ignition switch connection. get a sewing T Pin, or piercing probe. Again key on, Voltmeter to battery ground, if primary ground was deemed good then a connection there is okay, dont have to connect direct to battery, the wire is okay.
back pin or pierce check on the bike of the ignition switch connector. You should see the same voltage number on all wires, except 1 I bleive with out looking. but write down voltage and what wire it was on. check the same voltages on the other side of the connector, are they all the same, is 12V present on all wires other than the B/W (typically) this should be 0V. If yes this is has tested your ignition switch is functioning normally and the connection in the connector is good.... now you have to dig elsewhere... IE computer powers and grounds.