On my 1990 X/flow, there is a "hazard" relay (which I think would be better described as an Indicator Relay). When the ignition is switched on, the relay is energised and enables the indicators to work. So, if you have removed the ignition switch and replaced its function with the FIA switch then I would expect the relay to be energised when the FIA is turned on. (As an aside, if you've removed the ignition barrel how do you stop the engine?) Do you have the wiring diagram? Ian