dont know what to tell you to do on the 62, have duals on the fj80(one red top and yellow top), havn't done the 62 yet(prolly won't, no winch no plans for one)
instead of the OEM tray and brace, use the stainless tray/s
http://www.stainlesstrays.com/products.html
I just added a set in my fj60(62 should be the same) and they are SWEET, cost less then the OEM tray and won't rust out(old tray was the only rust on my fj60)
For the 60 I ordered a OEM washer bottle bracket that take the place of the J-hook, the bottle slides right on it like the stock(on a 60) location. I mounted it on the passanger side(more room on a 60)
IMOP optima yellow tops are crap, I have 2-3 that are toast or on there way out, not more than 2-3 years old.
Red Tops seem to work just fine for winching, I don't think I have had a red top go bad, the pair on my boat are 6 years old!
Trying a Exide XCDs in the 60, suppose to be built better than the Optimas, takes a charge better, the side post won't melt(like an Optima), cheaper.
for the mack daddy of batteries these are da chit 8)
http://www.odysseyfactory.com/
I'm using them(1200MJT's) in the Fj40, pretty dang impressive batt and small with alot of power, built like a tank, can take a fast charge.
best price, good service and fast/cheap shiping these guys are great
http://www.batteryweb.com/hawker.cfm
you can get a 1200 and a 680(I think it is) to fit in the stock tray(on any Cruiser I think) !! I'm modifiing the tray(on 40) to take 2x 1200's, should be a sweet set up.
For actaull dual battery wiring I like the Wrangler Power Products stuff, been on my 80 for 3-4 years, never gave me problems and is simple to use, just a selnoid and a switch, ordering 2 more set ups from them next week, make all the cables myself.
Those are my thoughts
John H