Took my 26’ Firehawk cat out yesterday for the first time. I posted another thread about my steering issue. On top of my steering issue, I’ll be replacing bellows within the next week or so and my drive shifts hard. It’s a blower motor with a big cam so I tried to time my shifting when the RPMs dropped the best I could. Short run to see what issues I needed to address.
So I need help with understanding the shift interrupt switch.
Should I have a switch where the shift cable engages the short drive cable in the bilge(because I do not)? Or can this switch be tied into the shifter (gaffing) at the helm?
At the helm, I looked at the wiring and was able to figure out which wires were for the trim. 3 wires remain, blue, red, and black. Are all 3 of these for the neutral safety? The neutral safety does work.

Anyways, is this as simple as buying a switch and putting it here?




It has a digital 6AL MSD ignition. Not the marine version so it does not have a timing retard wire. So will wiring this switch inline with the coil ground wire be okay? Thanks for the help.

Bravo does not use shift interrupt switch.
Idle RPM needs to be about 700 which may be tuff for you.

Well I feel dumb.
I didn’t like the sound or feel at all when shifting into reverse, even timing it with the rpm drop which was below 700.
If I did install a switch, would it help?

Or any other ways to help soften the shift?

No, the bravo needs rotation to shift, it's not a dog clutch like alphas

Thanks.
Besides timing my shift with rpm drop, anyway to soften it? Just don’t seem like it can be good for my drive.

what you feel is the cone clutch engaging. it is what it is unless there is a problem with lots of wear on the clutch. most bravos thump when they go in as the clutch is drawn up into the cone. if you want a smooth shift you would have to ditch the bravo and put a speedmaster on it with a transmission which is not practical for your boat.

I appreciate the insight. New to me boat and it’s just a different feel. All my fountains shifted like butter. Just want to make sure I’m not doing anything wrong.

Yes, there is an answer for help.

The Daytona Marine ignition boxes are fully programable and have an idle stabilization feature for helping issues like yours.

several peeps on this board have successfully used them on sc’d applications. ICDEDPPL and Mild Thunder are two. They have many write ups on them

Here is one of several good threads on it:
604ci build. Ready run msd or ignition box?