03-02-2024, 08:37 PM
First put an inline fuse between the battery and the ammeter. Then beg, buy or borrow an AVOmeter with a 10A range (there are loads on eBay, or you can borrow one of mine) and fit that at one end of the replacement wire. It will show you how much current is passing through that wire. If there is excessive current, then the AVOmeter's trip switch will pop up.