Found my dads original 1971 duster!

Also in these pics it shows the ground that comes off the light harness at front of car and the engine ground. I’m told that these are both terrible grounds. Could this have anything to do with my issues? I have someone getting me proper engine ground cable tomorrow. The front light harness ground is completely loose and doesn’t even look like he scraped paint off to make contact. The engine one is grounded to something that appears to have a gasket between it and the firewall, so I’m not sure how that could ground at all
Obviously I’m going to fix both of them, just wondering if these could be the cause of no lights etc

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