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Discussion Starter · #1 ·
I have a 94 2500 that had a 454 in it. I got a 6.5 turbo diesel from an 89 and am currently swapping it. I took the wiring harness from the 89 and everything plugs in except for the heater control. Is there an adapter somewhere out there or a diagram I can use to splice my heater control into the older wiring harness?
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