Bob C Posted April 5, 2013 Share Posted April 5, 2013 I found a direct replacement alternator that puts out 130 amp, bolts right in, and uses all of the Toyota electrical hookups. It works with the stock gauges and idiot lights. I will be making the following changes: 1. New battery isolator (relay style) rated at 200 am 2. New circuit breaker leading to the coach battery-manual reset, rated for 150 amp 3. New 4 gauge wire leading from isolator to circuit breaker and from circuit breaker to coach battery I decided on this approach because I want more charging capacity and I did not like the idea of switching over to the GM alternator. I would have had to buy a GM unit, mounting bracket, adapter for wire harness, etc. I was able to get the isolator and circuit breaker online pretty cheap. The alternator was a little pricy but the total cost was only about 7$75 more than a used alt and all of the brackets & adapters. I will let you know how everything works. I also am adding a volt meter on the dash that reads the coach battery voltage so that I can keep track of everything. I have a 12 compressor refrigerator that works great but pretty much maxed out the charging capacity of the stock alt. Quote Link to comment Share on other sites More sharing options...
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