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2026 ACDelco Tech Challenge - July 2026

Last month we asked this Tech question and invited you to share your answer. We value your expertise and want to thank everyone who participated!

Question:
When a technician is using a Ford wiring diagram to trace a ground-side fault, what specific information does the 10-3 designation provide beneath the component's location identifier? 

Answer: Ford wiring diagrams use a cell numbering system to help find individual wiring diagrams for systems. The 10 refers to the cell number and the 3 refers to the page the diagram can be found on. Together, 10-3 tells the technician to turn to Cell 10, Page 3 of the manual to find a more detailed diagram of that ground.      

Congratulations to the following shops who answered this question and will be receiving a prize pack!
  • John at Auto Tech Repair Centre Ltd. in Okotoks, AB
TECH CHALLENGE PROMOTION REMINDER
The Tech Challenge question is published in our weekly eNewsletter with an online answer form. Fill out the form with the details of how you would perform the repair to be entered for the chance to win the prize pack. You can also submit a challenge for future Tech Challenges! A draw is conducted with all shops who answered the question correctly and one is selected as a winner for a prize pack.
 
Got a Tech Tip you want to share for a future Tech Challenge?  >>CLICK HERE to fill out our question form.