I have a 2003 night train efi,i have no horn,speedo,signal lights,could be the ground but would it interfer with all of this

SOURCE: Speedo, turn signals, brake lights, horn stopped working. All else is fine.

Gap your plugs to 38 thou. Check all your bulbs (one burned out will affect the rest) Take a look at all your fuses and make sure they are all ok. Otherwise you are probably looking at a wiring short which will require trouble shooting of the elctrical system. Buy your self a service manual for your bike, this will help you a lot.

SOURCE: 2003 Night Train, EFI. When started cold runs

check the o2 senser

SOURCE: night train bogging out

I suspect a clogged fuel filter, but also check air filter. Take a flash light and look for crud in the tank. If you have to, go get a gas can of fuel, and dump the old gas. Five week old gas usually is not a problem, unless it was bad to start with...ie - bottom of the tank at the gas station.

SOURCE: Started to blow accessories fuse two nights ago.

You really need a schematic to determine what equipment is on the circuit protected by this fuse. I do not have schematics for the late model machines, only a few earlier models. Some of the equipment supplied by this fuse are connected by sub-harnesses with plugs on them. If you unplug a sub-harness and the fuse stops blowing, then you know it's something on that leg of the circuit. You may have to take the tanks and the seat off to access the plugs.

Good Luck
Steve

SOURCE: I have a 98 yzf1 bike was running been having

Hi, Sounds like you have a bad ignition switch. Also check alternator, so that battery is charging.
Do a test for me, start engine disconnect battery. If alternator is working you should have light and horn. Stop, engine reconnect battery. This will give you a better idea where the problem lies.
Good luck.