200 will be a bit of overkill, but then you will not have to worry about it, as it will only charge what you need. Also you can then put some underdrive pullies on other accessories.

 

Yep the bigger the better , like smoke says you can always add more and it cannot not harm the vehicle to have too big of an alt for the truck will only draw what it needs , it wont always put out 200 amps its just capable of supplying a 200 amp draw.. also with the bigger alt dont forget to upgrade all of youre grounds to a bigger awg wire like 4 or 2 ..you can still use the cap but they are nearly pointless unless competeing in sounds compititions with 200 farad caps..

 

no competetions for me i just like to have bass in my stereo .... and trying to get it to all run right with no hitches. i had nearly the same setup on my old 92 rado but it didnt have a voltage drop like this one is. i have noticed the drop get not as bad now tho.

 

Bigger wire will help some. It will allow more voltage flow consistantly. A cap does prevent you from having the huge drop in votage because it is storing the votage just like a battery. But it will not stop you from having a huge draw either. I'm running two amps in my truck and sitting at a stop light and jamming pretty good the volt meter will drop to 9 with no problem. A lot of it will also have to do with what kind of amps your running. If its a rockford it's gonna draw a ton of power cause they're built to run on 14.4 volts consistantly.

 

ok that explains it right there. my old amp was a memphis and i had bigger amp cables and never noticed the draw. but i replaced it with a rockford amp and now i see the draw. like i said before its gotten better when moving it stays at about 13-14 now. and drops to about 10-12 at a stop depending on how much its cranked. didnt realize the rockfords put out so much better then most others till now