6. Lengthen old "Batt" wire removed from Regulator to reach the new Atlernator and install
new Alternator wiring plug available from most auto parts stores.
Do not plug this plug directly into the Alternator!!!!
Step 7. Install a "Diode Pigtail" into Alternator socket. (These are available from several sources)
Then plug the extended "Batt" wire into the socket of the "Diode Pigtail."
Note: This diode prevents battery drain due to voltage back-feed.
Most "home conversions" are not reliable due to this feature being omitted.
Step 8. If you are by-passing your original Ammeter, make that wiring change now. Note: Your
original Ammeter is rated at 40 Amps only and may be damaged by an Alternator as the
output is more than 40 amps when charging a mostly discharged battery.
( Note: 1954-55 Manhattans do not have an Ammeter - refer to Charge Light information sheet).
The following is recommended:
1- Reverse all wires on old Ammeter. Put Pos wires on Neg and Neg on Pos.
2- Add a #10 wire shunt accross Ammeter Pos & Neg terminals.
3- Install a new Voltmeter in a location of your choice and wire to Pos terminal on old Ammeter.
Step 9. Verify wiring and complete wiring as shown on the wiring sketch.
Note: Be sure the engine is properly grounded with a ground strap as original.
Step 10. Make all changes required to other circuits such as; Instruments, radio (conversion),
heater, windshield wiper, horn, turn signals, overdrive, supercharger control, adding
voltage reducers, changing light bulbs, etc. Remove fuses to any circuits not converted
to 12-Volt Negative Ground. Note: See enclosed information on "Runtz" dash gauge
voltages reducers - obtain directly from "Runtz" or other supplier.
Step 11. Remove old voltage regulator from car if desired. Be sure to refasten ground wires.
Step 12. Tighten fan belt tension.
Step 13. Re-check all mounting and wiring changes. (Connections and bolts correct and secure?)
Step 14. Check for faulty grounded circuits before connecting Battery cables.
Step 15. Install new fully-charged 12-Volt Battery. Connect Battery cables.
Step 16. Start engine and run engine at approximately 1,500 to 2,000 rpm.
Step 17. Check Voltmeter reading to ensure proper operation of charging system.
Step 18. Perform operation check of all electrical components.
Now, go drive it and enjoy!!