One Ace Four wiring harness....Fits 1920 to 1926 when Ace Motorcycle belonged to Michigan Motors and after Indian acquired Ace in 1927 than became Indian Ace.
Cloth covered wiring and cloth shielding.
Sodiered terminals with shielded ends were needed
one- A-3026 Head Lamp wiring unit
one- A-3027 Tail Lamp wiring unit
one- A-3028 Generator to horn wiring unit
one- A-3029 Horn to handle bar wiring unit
one- A-3030 Generator to switch wiring unit
one- Negative battery wire
one- Positive battery wire
Select year ....Also should you need ammeter wiring kit select from pull down tab.