Results 1 to 3 of 3

Thread: 553-109 Outputs

  1. #1

    Default 553-109 Outputs

    Looking to use the stand-alone Digital Dash kit to trigger a few relays to turn on fans, pumps & nitrous. The directions don't get specific on how to configure & wire. Please help.

  2. #2
    Join Date
    Nov 2013
    Chicago IL


    All of the Outputs are listed in the manual as to what they are capable of, you program them yourself.
    You'll need to use that Output to trigger a relay for any device you attach to it, as none of the Outputs are designed to handle any sort of a load.
    Don't forget to check out progress on my Race Car:
    Project Blasphemy - 8.07 @ 171
    Low 8 Second Street Car

  3. #3


    Looks like only two SSR Outputs. I was under the assumption there was more. Is the rest configured with Holley EFI? Also, is there a way to have the switch stay in the on position whenever the dash is powered up? For instance, we want the fuel pumps to come on with we turn the key switch on. This also powers the Digital Dash, but from what I've done so far, the switch will reset to off every time.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
About us
Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR® Sprint® Cup team and nearly every NHRA® Pro–Stock champion for four decades. Now, Holley EFI is dominating the performance world as well as our products for GM's LS engine. Holley's products also include performance fuel pumps, intake manifolds & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies - Hooker Headers, Flowtech Headers, NOS Nitrous, Weiand, Earl's Performance Plumbing, or Diablosport - Holley products can give you the edge you need over the competition.
Join us