Sometimes knowing 'too much' can cost a lot of money. Not long before I sold my MGV8, so early 2000s, I had a clicking starter. Not unheard of because the solenoid gets baked by the exhaust. I fitted a new solenoid, and no change. So it must be the starter motor. A new starter motor made no difference. Checked the cables and all OK, as I thought. So next was a new battery, or actually two x6v. No difference.
Now I'm struggling. Final throw of the dice, another check on the cable runs. The 6v batteries were under the back seat so an extra cable between the two but that wasn't the problem. The problem was a hairline crack in the battery positive terminal, which was a wrap around with one bolt through, and nipping that up, showed the crack. It cost a terminal to fix, but I paid for two batteries, a solenoid and a starter motor.
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