Re: Please help!!!
It's a 4.6 if it's original. Owner's manual should give you the fuse identification, but I think it'd be for the convertible top, if yours was a convertible. The missing wire looks like it might be for your temp sensor, but I'm not wholly sure about that. The radiator cap shouldn't have an affect, but if the pressure the cap is designed for is too low, it will lift and you may run high temps. Not enough info on the AC, may have lost it's charge.
'Scuse me, while I scrape this Honda outta my treads.