It sounds like the easiest solution would be to scrap the blue park wire coming from the ignition. Just don't even connect it.
Then, the red/yellow wire from the ignition could be sent to the headlight switch, possible with an inline fuse to protect the 20A. Alternatively, would it be possible to just feed the headlight switch from the fuse box (i.e. the brown ignition wire supplies all power)?
In either scenario, the blue taillight/meter wire would be coming out of the headlight switch. Would that work?
Then, the red/yellow wire from the ignition could be sent to the headlight switch, possible with an inline fuse to protect the 20A. Alternatively, would it be possible to just feed the headlight switch from the fuse box (i.e. the brown ignition wire supplies all power)?
In either scenario, the blue taillight/meter wire would be coming out of the headlight switch. Would that work?