I have just found out from Lowrance that the only way to have a trim readout on a NMEA Lowrance Sounder/GPS is to connect the white 4 pin male plug into the black female near the starter motor on a Suzuki 140. While this gives you all the digital guages and trim it disconnects the warning lights on the Tacho.
As I described in a previous thread I ran a 3 core wire from the motor to the guages that way I have everything except the trim readout including the warning lights.
I am not prepared to jepodise my 5 warranty for a digital trim readout that's already on a guage.
LEI really got this wiring setup wrong.
Good luck
BlackArrow