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Senior Member
Join Date: Jun 2000
Location: N. Phoenix AZ USA
Posts: 28,977
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Quote:
Originally posted by trekkor
On the flip side, I've done close to 20 hours of welding on my car with the battery connected without problem one.
Probally a better idea to disconnect. Don't know if I will though.
KT
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How many diodes are in the alternator? 6-8 I believe?
What if one or two of them are knocked out by welding every so often? The "charging" light is connected to ONE diode only I believe, so until that specific diode is not working you have no idea how many you have in the system working. When that one diode fails then the charging light comes on and tells you you have a problem.
Its cheap insurance to disconnect the battery and in our cars pull the "14 pin connector" in the back to isolate the electrical systems when welding.
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2021 Subaru Legacy, 2002 Dodge Ram 2500 Cummins (the workhorse), 1992 Jaguar XJ S-3 V-12 VDP (one of only 100 examples made), 1969 Jaguar XJ (been in the family since new), 1985 911 Targa backdated to 1973 RS specs with a 3.6 shoehorned in the back, 1959 Austin Healey Sprite (former SCCA H-Prod), 1995 BMW R1100RSL, 1971 & '72 BMW R75/5 "Toaster," Ural Tourist w/sidecar, 1949 Aeronca Sedan / QB
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