I would like to wire a toggle switch (on-off-on) to my FMM and speed meter gauges, so that they would be able to stay on when either engine is running. Right now, these gauges are only activated by the starboard ignition switch. when the port switch is turned on, the gauges are not active. Could someone tell me what wire from the switch or is it from the tach that activates the gauges ?
thanks
thanks