Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Help - Recreating Fan Wiring Diagram Using Derale Controller & GM Stock System
View Single Post
  #3 (permalink)  
Old 06-28-2012, 06:58 PM
LATECH's Avatar
LATECH LATECH is offline Moderator

Last journal entry: Motor - vator
Last photo:
Join Date: Jul 2010
Location: Northeast Pennsylvania
Posts: 6,639
Wiki Edits: 0

Thanks: 392
Thanked 563 Times in 489 Posts
The red wire on the NEW derale diagram is the ground path, which is counter intuitive, but a ground path nonetheless. Using the first diagram for the GM part of the circuit, eliminate the OLD derale part of the diagram and using the red(counterintuitive) wire from the derale relay of the new diagram, splice it to the ground side of the cooling fan relay coil.Like I said which ever one grounds the circuit , runs the fan. Leaving the factory harness totally intact.
Fact is stranger than Fiction

Last edited by LATECH; 06-28-2012 at 07:08 PM.
Reply With Quote