Thread: The Ville 3/26-3/27

I had to clean up 15 years of wiring in my boat when I bought it and converted from a 24v system to a 36v Terrova. A 25’ electrician’s fish tape will be your best friend in getting from the battery compartment to the bow and everywhere in between.

You guys are on the right track, I bet your graph issue is 100% related to sharing power from your TM and shutting off when it senses the voltage drop. You might already have power at the bow to tap into from the cranking battery, but the ideal way would be to run a new pos/neg all the way to your cranking battery and fuse the pos side.

Your Terrova is pulling more than 40 amps at higher speeds (the transformer and graph is adding to the draw) and is tripping the smaller of the two breakers on the negative lead, but less than the 60 amps protected on the positive lead. I would remove the 40 amp breaker on the negative side first, eliminate the transformer that is robbing power from your TM system and test it through all speeds before throwing more money at it. If it checks out, measure for new TM wires and put them in with that fish tape.

Thanks Dutch. I’m also running my heading sensor through the transformer. The installation instructions say not to running it through a battery on an alternator (I.e. cranking battery) but have it’s on separate 12 volt source. Therefore I ran it through the transformer. I think I’m going to have to provide a battery in the bow for the puck and the fish finder. Thoughts?

Originally Posted by Newlight

Thanks Dutch. I’m also running my heading sensor through the transformer. The installation instructions say not to running it through a battery on an alternator (I.e. cranking battery) but have it’s on separate 12 volt source. Therefore I ran it through the transformer. I think I’m going to have to provide a battery in the bow for the puck and the fish finder. Thoughts?

You will not regret using that rogue storage bin for a dedicated electronics battery. I installed a fuse block for mine, but each unit has its own circuit, very handy when tracing a short or some other issue. Plus who likes a big jumble of wires in their battery compartment.
2 helix 10’s
1 Garmin 1222 GPSMAP
1 LVS32 + BlackBox
1 Mega 360 transducer
1 minn Kota puck
1 humminbird puck
Interior cube lights
USB port for charging
12v auxiliary outlet
That’s a large load to a dedicated starting battery, on long days I would sometimes have to jump the starting battery, some days it wasn’t enough so I went ahead did it. I got the connectors that heat them and they have a little solder inside of the heat shrink, they are on Amazon and it’s PERMANENT.
*note that I do run into moisture issues in the space, never really an issue before but your connections will not last long in a corrosive environment. I’m in the process of rigging up a small fan to keep air moving.


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Thanks guys. Took your advice, got her rewired and hope to be out Sunday. Good luck to all.

Originally Posted by Newlight

Thanks guys. Took your advice, got her rewired and hope to be out Sunday. Good luck to all.

Fingers crossed for you buddy. Let us know how everything works on Sunday. This is one of the few remaining places in the world where people still help other folks out doing what we love to do and is why I keep coming back year after year.

Originally Posted by Newlight

Thanks Dutch. I’m also running my heading sensor through the transformer. The installation instructions say not to running it through a battery on an alternator (I.e. cranking battery) but have it’s on separate 12 volt source. Therefore I ran it through the transformer. I think I’m going to have to provide a battery in the bow for the puck and the fish finder. Thoughts?

I’ve had my Terrova heading sensor wired to the bus bar in my bow access panel powered by my cranking battery for three years or so with no problems whatsoever. I don’t use the Spot Lock 5’ jog function very often the way I fish but when I do, it works like it is supposed to. The only thing on my TM circuit is my trolling motor and a Blue Sea 60 amp switchable breaker that I use as a hard disconnect for the power to the TM before I charge the TM batteries to avoid frying the control board on the Terrova.