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Message:: [QUOTE="Snailexpress, post: 11550527, member: 142828"]Don't do it! Every  additional connection will add resistance in circuit. Small, 0.01 ohm. Do we have to worry about such small things? Yes!If you using microwave or coffee maker it's require about 1,200 watt power what is require 100 amps circuit current in 12 volt system.0.01 ohm resistance in circuit will cause voltage drop exactly 1 volt.The voltage drop will generate heat exactly 100 watts. Keep in mind this is spot heat on wire terminal. Heat will cause terminal connection even more bad and resistance will rise as the time goes due to loosening and oxidation.The numbers I have using is for example but you should understand the science.From posted pics I see wire size is too small. Looks like they use one from the kit. It's need to be doubled. And when the last time connections were cleaned? I have probably the same 2000 watt inverter from TS and have no problem to run microwave. Every 3 -2 months I do terminal wirebrush cleaning. Otherwise it will struggle.[/QUOTE]