http://www.audioheritage.org/vbullet...r.-A-pictorial
https://jbl43.net/catalogs/networks/3145_Network.pdf
The first link is a thread l wrote which tells you concisely what each tab on the pcbs are for.
If you are planning on using the system in full passive mode put the crossover mode switch in the passive position.
1. Connect a new Black insulated 7.5 amp wire from the High Frequency input negative terminal to the woofer negative terminal.
Then connect a new Red wire from the High Frequency positive input terminal to the input side of the L101 5.4mH inductor.
No other changes are required.
If you plan to use the system in bi amp mode put the switch in bi amp mode.
1. Connect a Black insulted 7.5 amp wire from the Low input negative terminal to the woofer driver negative terminal.
2. Connect a Red wire from the Low input positive terminal to the woofer driver positive terminal.
3. Connect a Back wire from High Frequency input negative terminal to ground side of the L102 4.8mH inductor.
4. Connect a Red wire from the High Frequency input positive terminal to the input side of L2 1.8mH inductor.
No other changes are required.
How you decide to implement this is entirely up to you. These networks were not designed to be modified for diy end users.
If you wish you could attach crimp connectors to the wires and remove the existing crimp connectors as described on the inductors. The other end of the cables can be attached to the input terminals as described with a crimp connector.
You will need to be able to follow the schematic. For example L102 4.8mH inductor will require a ground connection to the pcb ground via an insulated wire and the Black wire from the High negative input terminal. This is because the inductor is not directly mounted on the pcb.