If you have 68 ohms of resistance, we need to start there. I would just back probe the connector and run a wire to a nut and see if the radio comes on.
However, I just want to make sure you took that reading correctly. It sounds like you know what you are doing but 68 ohms is clearly high when you should have a half ohm or less on a ground wire. Just make sure you probe the wire with your meter and then touch a ground location or the ground nut that this is using. Also, make sure the meter is not set on a different scale giving you 68 ohms when you actually have .68 ohms.
Let me know this and we can go from there.
Wednesday, December 9th, 2020 AT 2:56 PM