ronsealdeath
Petty Officer 3rd Class
- Joined
- Aug 11, 2010
- Messages
- 97
Hi there,
I have a 17ft Microplus with two batteries and a 50hp Merc from 1988. It is currently wired with the second battery as a standalone to power horn, lights and some 12v cigarette lighter points. The second battery hooks to the engine straight.
I'm switching it to get the second battery on to the charging circuit using a Vetus 350A switch and some 35mm2 (AWG2) wire. I know how I'm going to wire the batteries up no worries. I'll use the Vetus Switch to crank from both batteries or the main battery, charge on both, then switch to number 2 battery when moored up for the radio, fishfinders etc....
I'm just a bit confused about wiring up my bus system behind the panel to feed 12v to all the ancilliaries. Should I hook everything to the bus then the hot wire in the ignition loom so I need to turn the key to power all the lights, horn, radio etc..... or just hook them straight into the 12v feed from battery 2?
I'm guessing it would be safer (ie less likely to run the battery down by accident) to hook all the bits to the 12v hot wire in the tacho plug? Is that a good idea? On my engine is this the yellow wire in the tacho plug? I think the ground must be the black on that loom. By my reckoning I can just take the ground and the 12v hot from the tacho loom to my bus bars and hook all the various ancilliaries (radio, lights etc...) to that? I have a Faria tach to hook in which I could then hook to the bus bars then just run the pulse line from the tacho plug loo thing? Will this all then just work off the ignition key going to position 1? If so it would be just like a car and a good system, is this the correct way to go about it?
Any ideas would be gratefuly recieved.
Cheers
Al
I have a 17ft Microplus with two batteries and a 50hp Merc from 1988. It is currently wired with the second battery as a standalone to power horn, lights and some 12v cigarette lighter points. The second battery hooks to the engine straight.
I'm switching it to get the second battery on to the charging circuit using a Vetus 350A switch and some 35mm2 (AWG2) wire. I know how I'm going to wire the batteries up no worries. I'll use the Vetus Switch to crank from both batteries or the main battery, charge on both, then switch to number 2 battery when moored up for the radio, fishfinders etc....
I'm just a bit confused about wiring up my bus system behind the panel to feed 12v to all the ancilliaries. Should I hook everything to the bus then the hot wire in the ignition loom so I need to turn the key to power all the lights, horn, radio etc..... or just hook them straight into the 12v feed from battery 2?
I'm guessing it would be safer (ie less likely to run the battery down by accident) to hook all the bits to the 12v hot wire in the tacho plug? Is that a good idea? On my engine is this the yellow wire in the tacho plug? I think the ground must be the black on that loom. By my reckoning I can just take the ground and the 12v hot from the tacho loom to my bus bars and hook all the various ancilliaries (radio, lights etc...) to that? I have a Faria tach to hook in which I could then hook to the bus bars then just run the pulse line from the tacho plug loo thing? Will this all then just work off the ignition key going to position 1? If so it would be just like a car and a good system, is this the correct way to go about it?
Any ideas would be gratefuly recieved.
Cheers
Al