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About Signal Dynamics Dual H4 Wiring Harness Kit for Plug-and-Play Diamond Star Headlight Modulator

Signal Dynamics Dual H4 Wiring Harness Kit for Plug-and-Play Diamond Star Headlight Modulator

  • The H-4 Dual harness is needed if your bike has an H4 connector on the headlight
  • This harness will work with both single and dual headlight/ motorcycles and with most Harley Davidson Motorcycles or motorcycles that use a Dual Filament Bulb.

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