" I've got an inboard outboard 165hp mercruser that keeps stalling when you
go from neutral into gear. I understand it may be the shift cable. A neutral
switch or something. Any Ideas???? Are there any adjustments on the cable
that could solve the problem????"

Check the adjustment of the "shift interrupter switch", it's purpose is to
kill the ignition for a moment when you shift into forward or reverse to
make the gear engagement easier.
Check the adjustment with engine NOT running. Move remote control shift
handle to full reverse while turning propeller shaft clockwise until shaft
stops, ensuring full clutch engagement. The switch should be in the center
of it's slot. If not, adjust the remote control shifter cable 1 turn at a
time (4 turns maximum) toward the end guide.