Hi Folks,

Another question about a marine radio install. I'm replacing the
stereo in my boat and the 12V+ wire coming from the battery is of
gauge 10AWG and the negative ground (connected directly to the
negative terminal of the battery is 8AWG. The wires coming off the
stereo's wiring harness are much thinner (not 100% sure what gauge but
much smaller).

Is it OK to splice these two different gauges of wires together? If
so, what is the best method of doing so? Solder & Heat shrink?
Crimping?

Running new wiring of a smaller gauge back to the batteries would be a
pretty big job.

Thanks,
Rob