1973 1150 Mercury outboard wiring Question

[Thunderdude]

I have a 1973 Mercury 1150 that Im trying to bring back to life. The (tower of power) inline vertical 6 banger. Theres alot of wires that are rusted to where they have been severed and are no longer functional. So I bought some automotive wire on rolls of different gauges to re-wire the beast by hand wire by wire. its a way cheaper method but my question is.... Is doing this ok? As long as the wires are of the same gauge when i replace them. Any help would be appreciated. Mercury 115.jpgmercuer115 2.jpg

[LFR]

hello, i have a 74' that needs a few wires replaced also. i am no expert however have done alot of boat wiring..
i will be using expensive marine "tinned" wire, lubed shrink fit connectors with shrink tube over that.
Auto wire doesnt hold up in sound systems or trailers and has little chance of working long in the wet, hot engine compartment.
No tunes or lights is one thing, dead engine or engine fire is another

wondering what the pros think, and always looking for a good source for ahcor wire - please advise

[Thunderdude]

Thanks for the info. I'm going to look into "marine grade" or "tinned" wires now.