Do you have the service manual for the bike? There's a wiring diagram in it that might give you some ideas...
...it doesn't look to me like the factory wiring has a relay...
"Stay the Trail," "Tread Lightly," and "Leave No Trace" ethics
Rising Sun Bio
2F "Brahma" + Lockright, tach, Warn 8274, FJ60 Power Steering,
soon to lose the Sanden OBA
to go back to factory emissions
1FZ-FE factory lockers + Safari Turbo
, CDL switch, cup holder, AATLAS1X leather, heated seats and JDM switches
Limited TRD 2UZ-FE SOLD