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FFCobra Craftsman
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Can I use a Hella relay with 30, 85,86 and 87
Probably. It depends on what you are trying to make the relay do and how many amps it can handle. The 4-pin relay connects pin 30 to pin 87 when the relay coil is energized. The 5-pin relay does the same thing, but it also connects pins 30 to pin 87A when the relay coil is not energized. On the 4-pin relay pin 30 doesn't connect to anything when the coil is de-energized.
 
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