Marine Electronics Forum - Help with nmea network

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View Full Version : Help with nmea network

03-21-2012, 04:02 PM
I'm trying to connect my HDS-5 to my Yamaha F150. I ordered the Lowrance network starter kit and the Lowrance/Yamaha interface cable, as this is what eveyone says I need. The starter kit only has 2 T-connectors in it. Don't I need 3 of these to make this work?

Every sample schematic I see basically has 1 T for each "item" that is connected to the network, plus 1 T for the power to connect. Then a terminating resistor at each end.

Heres my layout:
1 T under my console with a terminating resistor on the end, a 2' extension out of the middle going to the HDS, then the 15' extension going to the back of the boat. At the back I have the other T connected to the 15' extension, the yamaha cable out of the middle, then another terminating resistor on the other end. Do I need another T to be able to connect power, or can I just connect it to either end in place of one of the resistors?

03-21-2012, 04:24 PM
the resistors must be on each end. you will need a power tap tee connected to the trunk at some point.

03-21-2012, 04:42 PM
The Yamaha cable should have come with a T. And yes you need power off a T

03-21-2012, 04:43 PM
Read up on the Lowrance Installation Guide available for your gear on their website under Product Support/downloads

03-21-2012, 04:58 PM
Thanks for the help everyone, did a little more research and learned that the yamaha cable comes with another T connector so everything is covered.

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