The earth mounting point on the engine on mine is between the distributor and the ballast resistor.
The power cable runs along the engine subframe and then abck down the offside of the engine to the starter.
So, it's logical the positive is at the front and negative at the back. No reason why the wiring shouldn't be different on different cars though but it does affect the battery because of where the terminals are.
Well I have bought a Lucas branded 096R so it should look right and it should fit too if my measurements are anything like right.
1969 Mk2 2000 Saloon in Valencia
1977 TR7 16V tarmac rally car - works colours
1982 TR7 DHC - Cavalry Blue
1992 Rover 214i - White Diamond
1992 Mini Mayfair - Red (Mrs R's)
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