Smartcraft Transom Assembily with older Bravo
 

I've heard it's possible, and that it will bolt up and "almost" everythign should work. The one thing I know if different is the trim sensors. I DO NOT need or care for a trim guage on my dash. But I DO want the trim to function properly, hopfully even have trailer function. The Controls I have are off of a 1994 boat, single lever with trim buttons and trailer button on the stick.

Does anyone know if Merc, or anyone, makes a conversion kit to run the old trim sensors on the Smartcraft assebily? Any way that it can be done? Any oterh issues that I may have trying to run this transom asssembily with a 1990 bravo one?

thanks

The Digital Transom are the same like the Magnum, only the sender are diffrent. All Bravos (Bravo One, Two, Three, Black Hawk) fits on Bravo Transom ore Bravo Digitl ore Integrated ITS.

You need a digital to analog converter like this 8M0059529. But this is for outboard, but the sender are most the same, so it can work with connect the wire´s directly. ?????
https://cimg8.ibsrv.net/gimg/www.off...6b580f6486.jpg

Thanks Mike, that looks like almost what I need. That looks to me like it plugs in betweent the trim sensors and the guages, tp make analog guags work withthe digital signal from the digital sensors. What I'm concerned with is not the guages, I don't plan on runing any guages at all. I'm concerned with getting the drive to trim up and down. The wire schematic I have for the 1990 bravo shows two wires coming from the sensors, it goes to the trim up\down buttons\ solinoid on the trim pump.

https://cimg2.ibsrv.net/gimg/www.off...0814d581c0.jpg

(h) in the diacram are the trim limit switch on the port side on the drive. This switch are for trailer trim. Connect the 2 wires and you can trim full up to down with your throttle switch without to use the trailer trim switch.
https://cimg2.ibsrv.net/gimg/www.off...4dde110967.jpg

Have not looked but I'm thinking the converter listed above is for an outboard. Reason it caught my attention is I have the digital transom assembly installed and do not have smartcraft gauges. I used a different digital to analog converter, which allows full operation but the gauge still does not work. Have not figured out how to get the gauge working, but I also don't use it so no big deal.

What converter you use ? Part Number, picture ??

The old part 845060A1 is the old kit which is no longer sold. The new part is 884359T1 which is the same as the old part but does not have the screws and spacers.

Have mine mounted on the transom behind the motor. Could go out when it stops raining and take a pic but there is a image of it in the link below
https://enginemarinepart.com/ricambi...-884359t1.html

Here is where its discussed Manual 39
Boatinfo - Mercruiser Service Manual nr. 39 - 2006-Up Bravo Drives

All you need is the standard analog sender kit. It includes both the trim position (for gauge) and the trim limit switch.

For your use all you need is the trim limit but it is not sold separately.

https://www.mercruiserparts.com/8053...-kt-alph-brv-1

I will say it is a pita to install

You may know better then me, but those senders won't work on the Heavy Duty transom assembly (least not on the one I bought)
https://www.mercruiserparts.com/6511...vo-h-p-transom

Sorry I didn't catch the HD part. There is no solution for trim limit and HD transom without one of the newer digital engines where the trim is handled by the pcm.

That is specific to the HD transoms correct? The old analog trim sensors will fit on the smartcraft transom right? that's exactly what I'm trying to figure out.

My next question is setting the trim up to function properly. Can you elaborate on that a little please, your saying I can get rid of the trailer switch and just have full funtionality in the up\down buttons, correct?

The HD unit attaches the digital sender with a lever piece so it will move. The regular unit can have the digital sender attached directly to the gimbal ring directly.

My thought was you had a digital sender attached and wanted to know what was needed to use it with analog gauge. The part number listed above states it will work but somehow or another it has not, but does give me full motion without using the trailer function to go full up or down.

If you want to use the older analog senders, then remove the digital and install the analog ones as Bam has listed

Also as MikeS mentioned, you can just join the wires together in his post and don't both with installing anything extra

Yup, that sounds great, I'm just going to put the old analog sensors on it and forget about the guage.Thansk guys, I appreciate it !

Thoughts on bypassing the sensor completley and just running a rocker switch on the dast straight to the solinoids on the pump? How quickly does the trim move up\down? Durring normal operation, moving the drive down I'm sure I will feel it hit when it's all the way down. If I let off as soon as it's al the way down \ up will that be ok to run like that or will it hurt anything? My old OMC would "walk" up by it's self so I would have to trim down every once in a while durring operation. I don't expect that to be the case here, I'm reall yjust wondering if it will hurt anything due to my reaction releasing power (a switch) rather than the limit switch cutting power at the right position.

thoughts?

Don't know about your boat but I can hear the pump, except when running. Have turndowns so when idling the boat is quite. If your open exhaust all the time I'm thinking you may not know when going slow without looking to the stern to see water movement.

If trim is up to much and throttle is applied it can damage things, and just idling around if trimmed to high is ruff on U joints. So long as the trim switch and relays don't hang I don't see much of an issue

My exhaust is pretty loud, I'm almost positive I wouldn't be able to hear the trim pump going. I don't want the hydraulic pump pushing the drive up and down and maxing it out. I'm just going to put he analog sensors on it and run it thru a rocker switch on the dash rather than the buttons on my throttle. (Just because my throttle lever if pretty hammered. ) So I should be able to get the analog sensors mounted on the smatcraft drive, and calibrate them like normal with the exception of the trailer button which I want to bypass so I have full range of motion from limit to limit from the sensors.
That all sounds corrent yeah?

Yes, that should work

thanks bud, I really appreciat all the help.

Use the Trim Switch bracket from the HP Trasnom and put the old analog sender in the bracket. Than you can use the old analog gauge with the HP Transom. (The 3 holes for the srews are always in the HP Trasnom)
https://cimg2.ibsrv.net/gimg/www.off...a446a6ded9.jpg