Mondial 8 DAMN rheostat of light, schematcs bridge or help!

this is the second time that i remove and see the rheostat in my ferrari mondial 8, now
tthe fuse it's OK, but no light in my car, totally black out !!
DAMN!!!!!!!

Sometime can help me with a schematics of this single rhestat electric "card" , or some can help me to made a "bridge" ??
it's a "card" full of Threads with differents colors !

i need a good way to repair it!

my only last solution it's to go direct on ferrari 700 miles from my home!!!

Save me
J