Hi everyone! So I have been reading and searching diagrams both in books and online for days now preparing to do my swap. I have a 1991 k5 blazer and am putting a 2004 gmc sonoma body on it. I unbolted the bulkhead connector from the body of the blazer and pulled the ecm and wiring. The only wires I cut were running to the aldl I believe. They break out of the bundle about 6 inches from the ecm connectors and go to a white connector running to the driver side of the blazer. Every schematic shows D1 and D2 going to ground. Problem is I have a tan wire in D1 and a purple wire in d2. When tested with a meter i have grounds at D1 and D6. Any help you can provide would be greatly appreciated.
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