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Hi mate been too busy at work to have a look at it, gonna get a look at it on Monday hopefully can figure it out

That's too much of a coincidence to dismiss. Some models, and I don't know if yours is one of them, have connections under the seats and/or carpets for such things as comfort control modules and airbags, so it would be worth looking there for moisture and corrosion of terminals. I also echo Gareth's comments on battery coding. Without coding the new battery may be damaged.

Hello Mark, Your additional detail now paints a different picture, and points to the need of explaining the full story from the outset. Comments:- I wouldn’t have bought a Napa battery for these battery-sensitive vehicles, but that’s a personal view, based on experience of simply buying best quality at most competitive price. Battery needs to be coded ASAP to minimise the risk of toasting it, if not already done so. Hazard lights flashing ( I guess when not switched on?) points to alarm issues. ‘Wetvac’ on floors and seats and ‘…soaking wet’. The moulded carpet has a water resistant backing, so surface wetness should not have got through to any under-carpet electrics, but obviously we cannot quantify your ‘soaking wet’. It could well be a contributor to your issue, but it could be a coincidence. Lifting carpet ( after vacuuming as much moisture as possible) would be the only way to check. Engine starting and cutting out a few seconds later, points to immobiliser issues, but many of your codes can point to a below par battery. Recharging the battery maybe a no cost interesting trial. Please let us know how you get on.