No power to motor

[Offshore_life]

2001 ox66 150hp. I'm having issue with this motor . All the suddenly I can't get any power to the motor to start it up. 1st I though I was the battery .so I replace both .clean all the connection . Still no power all I hear it click click from the starter relay . Replace with brand new one .still no power . Every time I turn the ignition to on my tach with flicker on and off . When I try to start the motor all the tach goes out . Power tilt and trim won't work either . Trying to trouble shoot this problem . Please any forum member can give me idea what I can check next .

Thank

[jb123]

Ground or ground cable

[Offshore_life]

Jb123 I have also try hooking the battery straight to the motor with jumper cable to bypass all other wire .Still no luck getting power to the motor.

Thank

[rodbolt17]

the tach and control box trim and the start circuit all take power from the keyswitch.
the tach ground is from the keyswitch.
will the trim on the pan work?

[TownsendsFJR1300]

Besides the above, do you have a "Perko type" MAIN on/off switch installed?

Its NOT common for the contacts inside to get crappy or the wires to loosen up/ corrode inside the switch.

[Offshore_life]

Rodbolt the trim switch on the pan also doesn't work all I get is a click click when I trim it up or down. I also have a perko battery switch . I clean the connector make sure every secure down. I even replace it with a brand new one. Still get get click click when I try to start the motor or trim from the motor pan or from thorttle. If I jump start the starter it will spin.

Thanks

[rodbolt17]

you most likely have a bad cable.
do a forum search on voltage drop test and find which one failed.

[vaguada23]

take a look to the fuses, you have two together in the starter side of the engine

[Offshore_life]

Thanks rodbolt turn out to be a bad cable.