         
Generator Polarity The procedure to follow in correcting generator polarity depends on the generator regulator. Procedures for polarizing "A" and "B" type circuit generators differ. **Before removing old regulator be sure to tag all wires to ensure proper connection to new regulator. Also disconnect positive (+) battery cable** "A" Circuit Installation (Delco) 1. Check to be sure ignition key is in off position. 2. Place new regulator over mounting holes in same position as old regulator. 3. Install (3) three mounting screws saved when removing old regulator. 4. Reconnect wires to regulator terminals in same sequence as removed. Caution: Check wire tags to make sure wires are connected to correct terminals. 5. Reconnect positive battery cable to battery terminal. 6. Polarize the Charging System: Caution: This operation is very important and these instructions must be followed exactly. A. Use a piece of either 10 or 12 gauge wire about 8" long as a jumper wire. B. Hold one end of wire against screw head in regulator BAT terminal. (See Fig. 1) C. Touch other end of wire to screw head in regulator terminal marked ARM (See Fig. 1) for a maximum of (2) two seconds. There may be a spark but there is no danger to you. Caution: Do not touch regulator terminal marked FLD or any metal part with wire. 7. Polarization is now complete. 8. Start vehicle and check charging system for proper operation. "B" Circuit Installation (Ford) 1. Check to be sure ignition key is in off position. 2. Place new regulator over mounting holes in same position as old regulator. 3. Install (3) three mounting screws saved when removing old regulator. 4. Reconnect wires to regulator terminals in same sequence as removed. Caution: Check wire tags to make sure wires are connected to correct terminals. 5. Reconnect positive battery cable to battery terminal. 6. Polarize the Charging System: Caution: This operation is very important and these instructions must be followed exactly. **Do not use a jumper lead to polarize a "B" circuit regulator system. Using a jumper lead will result in burned regulator points** Polarize Regulator: CAUTION: Follow these instructions exactly (Fig. 2) A) Disconnect the wire at the regulator terminal marked FLD and use it to momentarily (no longer than 2 seconds) touch the wire to the BAT terminal. There may be a brief spark; this is normal B) Reconnect the wire to the field (FLD) terminal C) Start vehicle and check charging system for proper operation Important Notice: A low charged battery, or a battery that has shorted plates and is not capable of being charged to a normal voltage can cause a good voltage regulator to appear defective. The reason is that it may demand a greater charging rate than the generator can supply at the voltage setting of a good regulator. As a result, the voltage output would appear low, when in fact the voltage has never come up to the setting of the regulator. It may also generate excessive heat inside the regulator, which could cause the voltage control level to be lower than normal. Source: Genco Archives 
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