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Author Topic: P259 alternative?  (Read 4538 times)

Offline JohnP

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P259 alternative?
« on: August 28, 2016, 03:24:09 pm »
A bad alternator may have fried p259 as it no longer can control the fans relays. Its grounded correctly. Should I have added a heavy duty diode to the relay trigger wire?
Since the vems and tach are receiving the signal from msd can I use another source to drive the fan?  I have extra ignition pins if its possible.
 Thank you. JohnP
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Offline Kamuto

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Re: P259 alternative?
« Reply #1 on: August 29, 2016, 01:14:29 pm »
Quote from: JohnP on August 28, 2016, 03:24:09 pm
A bad alternator may have fried p259 as it no longer can control the fans relays. Its grounded correctly. Should I have added a heavy duty diode to the relay trigger wire?
Since the vems and tach are receiving the signal from msd can I use another source to drive the fan?  I have extra ignition pins if its possible.
 Thank you. JohnP
s259 can do the job easily
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