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# Plug In Board Process
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# Step 1 Research
have wiring diagrams in random loose format: pictures, scans, PDF, text.
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# Step 2 Data Entry
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have ECU connector pinout in google spreadsheet form, with explicit function of each pin, often with analysis of multiple vehicles with similar pinout. [Good example ](https://docs.google.com/spreadsheets/d/1H0cZPAJFbpprgSu1Y8BiAYzXbqddvIn-Hhod4QCVQwk )
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# Step 3 breakout
Break board for that connector to reduce risks, also a product by itself!
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# Step 4 Start of KiCAD
Pinout data entry into KiCAD
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# Step 5 Adapter
Proteus or else adapter for specific vehicle, based on steps 2, 3 and 4. Because cheaper fabrication and less labor intense.
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# Step 6 Plug In
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Full plug in board like Hellen if demand exists.