This adapter provides plug-and-play ignition timing control when running an MSD Pro-Billet distributor with a Holley EFI main harness that has an ignition connector, such as Holley part number 558-104.
Specifications:
- For Use With: MSD Pro-Billet distributors and Terminator X
- Compatible Harness: Holley 558-104
- Connectors: 2
- Wiring: Routed through protective sleeve
- Harness Application: Universal
- Warning: California Proposition 65
- Part Number: 558-325
FAQ
What distributor does this adapter work with?
MSD Pro-Billet distributors.
What ECU is it compatible with?
Terminator X, when using a Holley EFI main harness with an ignition connector such as part 558-104.
What does it enable?
Plug-and-play ignition timing control with an MSD Pro-Billet distributor.
How many connectors are included?
Two, wired through a protective sleeve.

