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When to Replace Ignition Wires

Noah

Well Known Member
Is there a recommended time in service for ignition wires (automotive in my case) or are they replaced on condition only? I'm coming up on 1000 tach hours and thought that might be a good time to replace them (2 sets per recommended TBO)?

If not, other than checking for mechanical damage, is a DC resistance check sufficient (180 ohms per foot)?

For you high timers, how many trouble-free hours have you got on your automotive ignition wires?
 
from the Lightspeed manual:
Replace high-tension leads at 500 hours or 10-year intervals.
 
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