Now I've done it.
 

While trying to wire up a headlight for my son's Predator 90, I have managed to kill the horn and electric start. It will still start with the kick starter. The fuse by the battery is good. Any ideas on where to look for a fusible link or other fuse? Anyone have the wiring diagrams?

Now I've done it.
 

Try the fuse near the battery. It's in a little fuse box. You can run those bikes even without the battery the stator output will run the bike so you prolly blew the fuse. Some bikes have the ground differently. Some are ground to run and some ground out to kill it.
It's probably just the fuse. Should be close to this and hope it helps.

From cdi
Blk/white to key
blk/red to stator
orange hot side of the coil Some CDI wiring is slightly different.
red/white or possibly white/red stator
blk to ground

To key switch
blue tail light
blk ground
yell/red stator
green taillight
blk/white CDI

From stator
blk/red CDI
wt/red CDI
Yell/ red Key
Wt/red keyswitch
blk ground
white Voltage reg ( Small silver metal box right side high up on frame)

Now I've done it.
 

It is fixed. I must have overloaded the starter relay. I was pulling power off the 'deadman' switch to switch the new relay and I guess it was too much. With either the lights or the deadman hooked up, it worked fine, but with both hooked up, nothing worked. I put a tap on a different switched wire and both the starter and light works.

Now I've done it.
 

Glad to hear it.