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Registered
Join Date: Feb 2002
Location: Chalfont Pa
Posts: 1,548
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Fuel pumprelay and black relays?
Are there any differences besides colors with these round relays?
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01-06-2004, 01:09 PM
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Join Date: Dec 2001
Location: MA USA
Posts: 2,938
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Yes the red one has a diode in it.
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Dean 911 SC turbo, 3.0L 930 motor, G50, 930 brakes, DTA EFI, 352 RWHP DynoDynamic dyno, |
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01-06-2004, 01:30 PM
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Join Date: Sep 2002
Posts: 3,580
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Yes, the red ones have an internal diode that prevents power surging back through the circuit. Look here for details:
The Special Red Relay...what's it protecting?
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993 |
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01-06-2004, 01:31 PM
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Join Date: Feb 2002
Location: Chalfont Pa
Posts: 1,548
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So can I use the black one in place of the red one or am I asking for problems?
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01-06-2004, 01:54 PM
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Join Date: Jan 2003
Location: San Francisco Bay Area
Posts: 1,194
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I was told by a reputable source that switching to the black one is o.k. in a pinch (and also that many people have run the black relay for a long time without incident). I had a fuel pump relay in my 930 die on me so I ran black ones for a few days until new red ones arrived from Pelican. For $25 it is hardly worth it to risk running the black ones there long term.
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Bill |
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01-06-2004, 02:49 PM
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