Doc O Rock
Active Member
- Mar 23, 2016
- 448
- Boat Info
- 1999 380 Sundancer
- Engines
- twin 7.4 Merc
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Is that your backbone cable? If yes, the just put the T‘s in between.I am installing a pair of Fox Gateways on my 99 380. In the engine space, I have a Nema splice on the bulkhead from a previous installation. Can I install my Nmea T's in the splice connector?
I think it's an extension of the Nmea going to the port-side fuel flow meter. I've read a lot of the theory of NMEA but other than paying my electronic guy to hook stuff up and watching over his shoulder, this will be the first start-to-finish job myself. What could go wrong?Is that your backbone cable? If yes, the just put the T‘s in between.
Fox gateways are great btw.
So trace that back to the T where it connects. I don’t think you can jump into an extension like that. I think the connections are different sizes.I think it's an extension of the Nmea going to the port-side fuel flow meter. I've read a lot of the theory of NMEA but other than paying my electronic guy to hook stuff up and watching over his shoulder, this will be the first start-to-finish job myself. What could go wrong?
I think I might fish a separate drop down to the engine room.All NMEA 2000 connections are the same (DeviceNet) connectors. There is no difference between the connectors on the backbone than on the branch connections. Actually branch lines are the same as the backbone. Maretron does make a dedicated backbone cable which is a heaver insulation.
But as @Golfman25 says, you cannot connect multiple devices to a branch; if you do and it works you're lucky. There is a "multi-port box" that is a special device which allows a branch to have more than one device on the branch but they are a bit on the pricey side.
Every device must tap into the backbone uniquely.
As I remember it displays in 10 rpm increments.Looks good. what increments do they display rpm's in?
This is exactly what it did.As a suggestion, extend your backbone to the engine room rather than a drop cable. Then you can have as many devices connected to the network as you desire in the engine room or anywhere the backbone is routed.
If you are anything like me, your system will grow over time as the capability of that network is better understood.
So I replaced my Garmin GMI 10 with a Garmin GMI 20 and now I have what I want in a compact display right in front of me.
I also had GMI20's in my other boat and found their displays to be "canned"; which is great for most. Since, I've moved over to the Maretron DSM displays and I've found their flexibility to not only display more and different data but also to customize the data to best fit the boat's needs.I have two of them, one for each engine. The only thing I don't like about them are they only display RPM in increments of 50 RPM. Their MFD's have the option to display RPM without rounding, I wish they would add that to the GMI 20.
I also had GMI20's in my other boat and found their displays to be "canned"; which is great for most. Since, I've moved over to the Maretron DSM displays and I've found their flexibility to not only display more and different data but also to customize the data to best fit the boat's needs.
I was wrong, it displays in 50 rpm increments.Looks good. what increments do they display rpm's in?