I'm not 100% sure but USUALLY on vehicles White is ground.....
You would need to use a DMM to ensure that is correct before reconnecting anything.

 

NO. White are NOT grounds from the fusible link block!

A factory wiring diagram helps a lot. :wink:

OP: Was the 100A alternator fuse sitting in a block that is inside the big fuse box before you took it out?

From that block, Black is incoming from battery. One of the white is incoming from alternator. They each go on one leg of the 100A fuse socket. The other white wire connects to the 50A ABS fuse and the 50A AM1 fuse in the big fuse box. The red wire goes to the ABS unit.

The alternator fuse and the ABS fuse are connected back to back. The white wires go to the connected positions.

 

Like I said not 100% but most vehicles I have seen have white grounds.
Including standard trailer wiring http://www.etrailer.com/faq-wiring.aspx

Glad you had the CORRECT answer, instead of my best guess

 

block fuse situation

sorry you might have given all info needed didn't read the last post correctly
#:grin:

 

please you are the smartest who can help

PLEASE YOU ARE SMART i AM NOT SO SMART QUESTION AGAIN SORRY so where does the black go if its coming from battery still please need help you are the man the only smart man who can help I am at you mercy thank you for the knowledge posted already