I am currently converting an 86 GT to a 3G alternator. There seems to be more than one school of thought on this (see schematic).
The first is to leave the original Black/Orange charge wires in tacked and connect them to the charge output post of the 3G alternator. Add a 4AWG (circuit protected) charge wire to the same output post and connect it to the battery side of the starter relay.
Set up the D connector with the white wire going to stater on the alternator and connect green to green and yellow to yellow.
The second school is of the opinion to ditch the original Black/Orange charge wire because it becomes a safety issue. It is not big enough to carry 130 amps (if the circuit protection is tripped on the 4AWG). Connect a new 4AWG (circuit protected) from the output post of the 3G alternator to the battery side of the starter relay. For the D connector connect the yellow wire to the battery side of the starter relay or the output post of the alternator, the white wire to the stater on the alternator and green to green.
I lean to the second school of thought but my Question one is this. If you do either (see schematic) can the amp gauge read accurately?
If the first method is chosen then not all of the current produced will go through the amp gauge.
If the second method is chosen then none of the charging current will run through the gauge.
Question 2 is can the factory amp gauge even handle 130 amps? Even if it could who would want 130 amps running through the dash board?
Any input on this is appreciated.
Matthew
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