• Battery, (2) small 6 volt batteries (66001-61A) were wired in series to make 12 volts.
• Positive Battery Cable
  • Interconnecting cable between the two batteries (70033-63).
  • Battery to regulator (70245-65).
• Negative Battery Cable (70213-65).

1965-1966 XLH positive battery wire. 1)	1965-1966 XLH negative battery wire. 2)

• Battery
  • 1967 XLH (66006-65), single large 12 volt battery.
  • 1968-1978 XLH (66006-65A) single large 12 volt battery.
• Positive Battery Cable
  • 1967-E1975 XLH
    • Battery (+) to starter solenoid (70069-65A).
  • L1975-1976 XLH
    • Battery (+) to starter solenoid (70097-75).
  • 1977 XLH
    • Battery (+) to starter solenoid (70097-75).
  • 1978 XLH
    • Battery (+) (70174-78).
• Negative Battery Cable
  • 1967-1972 XLH (70235-67).
  • 1973-1978 XLH (70235-67A).

• V-Twin Manufacturing (2012472): flat braided ground strap, 9.5“ long, (replaces HD 70235-67A), 4 gauge, 17/64” and 11/32“ hole sizes on heat shielded terminal ends. ³⁾
  

1978 XL/XLH Positive Battery Cable (70174-78) 4)	1973-1978 XLH battery ground strap (70235-67A) 5)

• Battery (66006-70), single small 12 volt battery
• Positive Battery Cable
  • 1970-1972 had no part# for the positive cable. The (+) wire was installed as part of the circuit breaker part#.
  • 1973-1977 XLCH
    • Battery (+) to regulator B+ (70029-73).
    • Battery (+) to main circuit breaker on 1977-1978 has no part number.
  • 1978 XLCH
    • Battery (+) to regulator B+ (70029-78).
• Negative Battery Cable
  • 1970-E1978 XLCH (70295-70).
  • L1978 XLCH (70295-78).

Note: 1977-1978 factory wiring diagrams for both XL and XLCH show a second wire from the battery (+) to a main circuit breaker.
The main breaker (74599-77), later changed to (74599-77A), did not come with wires.
And it is only shown in the parts books for 1978 XL, XLCH.
The wire on the FSM diagrams does not have a part number in the parts books nor is it mentioned in them.

1970-E1978 XLCH negative battery cable. 6)	L1978 XLCH negative battery cable. 7)

• Battery, single large 12 volt battery with 10mm post screws.
  • 1979-1980 XL/XLCH/XLS (65991-75B)
  • 1981 XL/XLS (65991-75C)
  • 1982-1985 XL/XLS/XLX (65991-82)
• Positive Battery Cable
  • 1979-1982 XL/XLCH/XLS battery (+) to circuit breaker (70129-79)
  • 1983-1985 XL/XLS/XLX battery (+) to circuit breaker (70129-79A)
  • 1979-1980 XL/XLS battery (+) to starter solenoid (70097-75)
  • 1981 XL/XLS battery (+) to starter solenoid (69628-75) ⁸⁾
  • E1982 XL/XLS battery (+) to starter solenoid (70069-65A)
  • L1982-1985 XL/XLS battery (+) to starter solenoid (70083-82)
• Negative battery Cable
  • E1979 XLCH (70161-79)
  • 1981-1985 XL/XLH/XLS/XLX (70011-81)

1979-1982 XL/XLCH/XLS battery (+) to circuit breaker (70129-79) 9)	1983-1985 XL/XLS/XLX battery (+) to circuit breaker wire (70129-79A) 10)

E1979 XLCH Battery Ground Cable (70161-79) 11)	1981-1985 XL/XLS/XLX Battery Ground Cable 12)