Hi,
The new power master alternator I'm planning on installing has a tech note saying that on 3 wire installation, a diode should be installed if the vehicle does not have a charge indicator.
My first question: in my 1980 Firebird, at the top of the speedometer, their appears to be a blue square that can light up. Is this a charge indicator? I tried to shine a light but could not make up any symbols.
My next question is: If not, what is recommended in regards to installing a diode? The reasoning appears to be that it would prevent damage to the voltage regulator inside the alternator.
Any advice is appreciated.