Yes that's right but you may find it difficult to make the twisted pair stay tightly twisted. It'll depend on what you are using, the more flexible it is the less likely it is to want to stay twisted. Might be worth looking in a Maplins catalogue. I'm sure twisted twin flex is in there and provided you can buy by the metre might be the answer if you want enough oher stuff to make the p&p worthwhile.
It's an easy DIY wiring job, and much cheaper than a ready-made harness. The wires carry almost no current, so you can use thin wire (say 1 sq mm). It helps if you can get wires of the colours used in the Link 10 wiring instructions, because that will help avoid mistakes if you need to remove and refit the meter at a future date. The twisted pair only needs gently twisting. Follow the installation instructions to the letter, and remember the two 2A fuses in the permanently live wires - try to put these fuses right next to the battery.
Once installed, the Link 10 is a very useful and extremely accurate instrument. It will help you manage your battery bank for better performance and durability.
There's a simple way to make twisted pairs. Take the 2 (untwisted) equal length wires and secure one of each end in a vice. Secure the other ends in a drill chuck. Slowly twist them together keeping a bit of tension at the drill end. As the wires start to twist, they'll get shorter so you'll need to start moving towards the vice.
When you get about 5 twists to the inch you're home.
As you release the tension at the drill end, they will want to spiral back on each other. Don't let them.
BTW, you only need 7/0.2 mm wire for the Link. It's a brilliant device and not difficult to make a harness.
I've just put in a BEP 600 DCM monitor-also need twisted pair. Merlin who supplied it also sold me some appropriate wire-basically twisted pair with an earth & shield-cost £1.45 pm if you don't want to make your own. I only need 4m for my installation so this was a small part of the overall cost of the project.
Great now its up & running-I can see what the alternator & charger are actually up to & seeing the actual current used by some of the kit is a real eyeopener!!
Xantrex recommend 16 AWG wire, which is 1.3 sq mm, so that's why I suggested 1 sq mm. Smaller wire could be used, but as 2 of the wires are permanently live, it's important that the two fuses fitted are rated lower than the wire. Xantrex recommend 2A fuses with 16AWG wire; smaller gauge wire would require smaller fuses for safety.
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....the Link 10 is a very useful and extremely accurate instrument...
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Useful yes, but in my experience not accurate, though my problem seems not to be general. When I cut off my main switches the Link 10 continues to show a discharge of 0.1A. Leave the boat for a week and it will be showing -50AH but the battery is still fully charged!.
I've never figured out what's causing the phantom discharge.