Can you mix C7 and C9 bulbs together (in the same cord)?

Short answer: No, they won’t fit into the same cord because they have different-sized bases. Longer answer: This is a great question, especially since we’ve had a larger number of first-time Christmas lights customers this season. We have heard this question in this form several times over the last couple of months along with the… Read more… Can you mix C7 and C9 bulbs together (in the same cord)?