wiring up a 75hp chrysler

[Mideerslayer]

I removed a 85hp force due to a blown power head, and replaced the whole motor with a 75hp Chrysler.

I was told i could use the same wiring harness and such, well i thought i had it wired correctly but I'm not getting spark.

So does anyone know the wiring diagram for a 75hp Chrysler, i am not sure of the year because the model number doesn't come up with a year, but i would guess it to be a 74 or 75.

Also on the ignition switch does there need to be a ground wire from the the ignition switch to the the ground on the fuse panel?

also for the kill switch what wires to i hook up from the ignition switch.

This is frustrating to say the least, i cant even get past step one

Thanks

Rich