First, you need to download a service manual. There's a wiring diagram at the back that will be invaluable. The pics on 9-7 will also help in locating things. Have you checked that the fuses are all OK? Next, you say you can hear "the relay". Which relay? We need to know exactly which one. Yours most likely is an immobilizer model. There's an associated lamp in the cluster that flashes when the ignition is turned on. There's information about it in the manual and you can see it flashing in various Youtube videos. You need to confirm that it's working correctly. There are two connectors beneath the seat, a white six position and a black eight position. Measure the voltage at the O/G lead on the white connector (with the ignition turned on). It should be at battery voltage. It will tell you if the ECM is getting power. Then measure the voltage on the R lead on the black connector. It should be 5 V. The ECM isn't powering on if not. Then find the fuel pump relay. It provides power to the fuel pump. You can unhook it from the battery bulkhead so that you can measure voltages at the relay connector while it's connected to the relay. The R/Bl should always be at battery voltage. The O/W should be at battery voltage when the ignition is on. The Y/R is the power from the relay to the pump, so it will be at battery voltage when the pump is supposed to run. The Y/B runs to the ECM. It will go to battery voltage unless the ECM pulls it low, causing the relay to turn on & send power to the pump. So its voltage will vary depending on what's going one. Immobilizer models also have a single position and a four position connector for an external alarm. You can see them in the lower right corner of the E2/E19/E24 wiring diagram. All leads to them are black. There should be a jumper on the four position if there's no external alarm. The bike won't run without the jumper.