Wiring diagram needed OBD2 to OBD1

Discussion in 'General Chevy & GM Tech Questions' started by shawnlesky, Dec 24, 2010.

  1. shawnlesky

    shawnlesky New Member

    Switching engines from 1997 engine, 5.7 Vortex to a 1991 for a 5.7.

    Need the diagram to connect bulkhead connector pin outs and colors to perform this.

    Can anybody help? Anybody have access to AllData? I understand they have it but for all the more I play with this, it's not worth the $165 to me for a month's access.
  2. stephan

    stephan New Member

    Hey Shawn, welcome to the GM truck club. That may be kind of tough to come by. GM isn't very forthcoming with their w.d's... When I wanted to put a 4L60E in my older truck they wouldn't even share that simple wireing diagram with me.

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