What is the difference between the relays that are labeled with the a1 and b1 on them?

2007 DODGE CHARGER
317,000 MILES • 3.5L • V6 • 2WD • AUTOMATIC
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RYAN LEVINGSTON
  • MEMBER
  • 13 POSTS
Hey guys, I’m back again with another question. Can I use them wherever or are they designed for specific spots? And how do I know if all my relays are correct or if I’m missing any? Thank you in advance.
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Aug 20, 2023 at 9:23 AM
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STRAILER
  • ✓Experienced Mechanic
  • 55,249 POSTS
It looks like there is a size difference and it could be a terminal configuration difference as well. Here is the location of the relays so you can confirm the placements. Check out the images (below). Please let us know if you need anything else to get the problem fixed.
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Aug 21, 2023 at 5:00 AM
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