Hey bloke, are you saying the 90amp ones not big enough - sorry mate it's late I'm missing the yeti analogy?? I think that's what your dr8ving at- yes?
Yeahhhhh could be a knock-off, cheaper boards etc... it was well packed Tony, meaning the box etc looked the goods...
Ooo, well aren't you fancy with your fancy lights mine runs a stator so I can only be fancy to a certain degree ...but I got it looking pretty for the road with lED's, well to get the plates on her anyway... seem to be holding up ok....
Regarding my horse ,I so want to re wire what's been done by 3 or 4 so called auto electricians over the years... I'll bolt this one up and be guided by that, if it dies I'll do it all myself and just work through it forum by forum... oh and buy another fire extinguisher for the cab lol
The 90A one is probably big enough, unless you're drawing up towards 90A off it with lots of lights. I replaced my 130A alternator in my D40 with a 150A unit and it hasn't missed a beat, but I've also removed the two halogen driving lights and no longer have a winch (saving weight and improving airflow). Because I'm not pushing it as hard, it should last longer.
The yeti is a mythical creature, just like "yeah that component will handle everything you throw at it" claims. Yeah, nahh ... components made that only just tolerate a load will die at that load, because of heat, vibration - the tolerance for adverse conditions just isn't there when you are cutting manufacturing down to the barest needed to keep the costs down. That's what I meant.
Bodgy wiring is a pain in the butt, because every bodgy join is another possible failure point. Keep it neat, keep it simple, keep systems isolated so that one doesn't affect another. I have two cable runs heading to the back in my car (both fig 8, so 4 wires in all) so that the dual battery isn't affected by the caravan power. I could have just run one set of cables back and tapped into that at the rear and while I did make a Y-connector and hook up the secondary power to the rear through that, the primary power is a solo run.
Good luck with it!