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BugLightGeek said:
won't that setup cause too much resistance for the bulb in the KT2?
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Why would it? There is a lot of positive metal to metal contact where the A19 mates with the body and tailcap of the flashlight, at least 6-7 threads. I can't see any significant (or even measurable with a common multi-meter) resistance being added with two A19's. I currently run one A19 on a 9P with a Turbohead, and have done so for quite awhile. No problems at all.
-Keith