Last weekend going down to drill in Ft. Jackson my alternator started to go on me (lights going dim then bright and back). I looked for a replacement and upgrade and found a 200A one on e-bay for around $200 with shipping. Looking back I should have put more thought into it. Having 200A alternator required me to install a larger power and ground wire (2 gauge) wire which I did not have on hand but I did have running to my winch. I had an extra 4 feet of each wire. I am still waiting on a 200A circuit breaker for things to be 100% safe. (I bought a second circuit breaker for my winch as well).
The good: I have plenty of power now more than enough to run my winch, dual electric fans, aux. lights, and probably a small village if need be.
The bad: My 16 year old 3rz-fe with 211,000 miles is a bit weak, when I turned on my lights I have to do it slowly at idle (the initial current spike actually stalled the motor, so I have to turn on the parking lights, wait a second, then turn on the headlights).
The first time I tried out my new alternator I found the weak link in my ground circuit. I had a small 14 gauge wire going from my fender where my KC Daylighters relay was located (I installed it to give it a better ground though not necessary). I started to smoke the wire with all the lights and aux. lights on. I cut the wire and things have been good since.
Conclusion: Looking back I could have done without all the extras (aux. lights, electric fan, etc.). I feel that sometimes I create more work by "improving" my Tacoma. It doesn't make since to go back though (blood, sweat, and money spent). Now I feel that I need to focus on working on the wiring on my Tacoma (starting to look cobbled together) find a decent fuse block and take the birds nest of wires going off the battery terminals. I'll let everyone know how the clean up goes. In the mean time I have to fix my A/C (which quits after about a half hour of driving) and an air bag light that stays on (open in the squib B circuit).