Precision Turbo and Engine BigStuff3 GEN3 PRO SEFI (LS1) System Hardware & BigComm Software - Manual (Page 24)

BigStuff3 Pro SEFI System (LS1)
Version 1.0 23
appears. Drag the BigComm shortcut icon onto the desktop. The BigComm icon allows for
quick access to the BigComm software from the Windows desktop.
10. Communication Cable-to-PC Connection
Using the communication cable supplied with the system, connect the 3-way Packard connector
to the mating half 3-way connector marked CalPort on the Main Wire Harness. Connect the
RS232 connector to the back of the personal computer.
Port Problems?
If the RS-232 connector located at the end of the interface cable (supplied with the system)
cannot be connected to your PC, a 9-pin serial port interface adapter will need to be procured. If
the PC is a newer model it will most likely have a USB port. If the PC being used is an older
model it may only have a 25 pin serial port. Make sure the 25-pin port, on the back of the PC, is
a serial port and not a parallel port, there is a difference. The parallel port will not work.
Parallel ports are typically printer ports that let data travel in only one direction. If your PC is
configured with only a USB port, a USB-to-9 pin adapter must be procured. USB-to-9 pin or 25-
BigComm
shortcut icon
Packard connector –
Connects to the Main
Wire Harness
AMP RS-232
connector –
Connects to PC
CALPORT connector on
the Main Wire Harness.
Connects to the
Communications cable
5’ Communication Cable
(supplied)