High resistance battery to chassis ground

[Sephious 10+ year member]

I upgraded my battery to chassis ground today with some 4 gauge Knukonceptz wire and decided to check out my resistance at the same time, as well as the resistance with the old wiring and old grounding spot.

The resistance between the negative terminal and the old ground was 12 ohms, and the resistance for the new ground is 8 ohms. Both are grounded to metal on the chassis with the grounding point sanded to bare metal. How come my resistance is so high? I can't find anywhere on the chassis that is within grounding-wire distance that has less resistance.

Is it normal for the battery to chassis ground to be such high resistance? I've researched that ideal should be under 0.5 ohms, but there's never a mention of which ground that is, or if that should be the same for every ground.

Anyone have any insight here? Thanks.

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[Sephious 10+ year member]

Well, it looks like both my multimeter and my clamp meter **** for measuring ohms. Tried them both again several times and got widely varying results. I got some readings which said the resistance was zero. The only thing I've been able to verify is that the new grounding location is slightly better than the old one. I can't really tell the actual resistance of the ground.

I bought a different multimeter with higher precision on the resistance side of things (tenth of an ohm instead of one ohm) and hopefully it's also more accurate.