although the conventional wisdom among RSV owners is to put their passing light circuit on a relay, I agree with Red1. Looking at the size of the contacts in the switch, they should handle the load, as long as they are clean and don't crack. The downstream solder joints and connections may fail if they aren't up to snuff, however. I've always suspected that if the ignition switch is going to fail on an RSV, it is going to fail regardless of whether your passing lights are relayed or not.
Now I suppose I've just jinxed my switch.
Kelly