Re: 2nd try...still nothing
What wire do you have where on the isolator?
The center terminal needs to be attached to the Charging lead from the alternator.
The outside terminals go to + terminals of the two batteries.
There are a couple of ways to do this.
1/ trace the thick wire attached to the back of the alternator (should be about 10 guage) to where it hooks into either the original battery location or the + connection on the starter motor and remove it from it's current location and connect it to the center post on the isolator.
or
2/ disconect thist same wire from the back of the alternator and tape it up and run a new wire from the alternator (10 Guage) to the center post on the isolator.
Next run a wire (10 guage) from 1 outside post to the positive terminal on one battery.
Next run a wire (10 Guage) from the remaining outside terminal to the second battery.
Now you're done.
See attached pic.
