Finger Print Sensor

Hello,

I am having a problem with interfacing my fingerprint sensor with the Arduino. My board recognize the module but gives the communication error i have no idea what to do i have tried many things please help.
Also mu Finger print sensor has 8 wires.

Adafruit Fingerprint sensor enrollment
Found fingerprint sensor!
Ready to enroll a fingerprint!
Please type in the ID # (from 1 to 127) you want to save this finger as...
Enrolling ID #3
Waiting for valid finger to enroll as #3
Communication error
.
Communication error
.
.

Make sure your wiring is correct (Tx to Rx and Rx to Tx).

Yeah i have tried doing that many times over now i am thinking of soldering those wires with pin headers.

also have the same problem, did you finally get the solution for the 8 wires?