Chrome Aternator Source Help

[rfmaster]

If you look on the back of your alternator there should be two small recessed male spade lug connections usually labeled #1 and #2. Terminal #1 is the "exciter" or "field" wire - this is usually connected to BAT light. Terminal #2 is the "remote voltage sensing wire". This is commonly referred to as three wire hook up (uses a white plug).

Sense wire is connected to remote sense (#2) terminal of the voltage regulator (inside alternator). Regulator uses voltage level on the sense wire to control alternator output voltage to compensate for voltage drop between alternator +B terminal and the battery. Alternator should put out between 13.8 and 14.6 volts. If there is no electrical load battery voltage (at the battery terminals) should be around 13.0 to 13.2 volts which would indicate fully charged battery. Most regulators have a set point of 14.6V which allows alternator to compensate for a voltage drop between battery and main distribution block (it is mounted on the firewall and has two studs). Place DVM with test leads connected at the battery terminals - with engine idling voltage should be varying between 13.0 and 13.5 with occasional excursions above 14 volts (if something turns on).

There should be no confusion regarding alternator BAT+ connection. This is a large insulated threaded terminal post on the back of the alternator and provides all the current for your accessories and charges your battery.

//RF