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sbc engine run on. by Tappy350
Started on: 09-08-2025 08:24 PM
Replies: 3 (80 views)
Last post by: Tappy350 on 09-09-2025 02:28 PM
Tappy350
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Report this Post09-08-2025 08:24 PM Click Here to See the Profile for Tappy350Send a Private Message to Tappy350Edit/Delete MessageReply w/QuoteDirect Link to This Post
Got my old school sbc swap running but having engine run on issue with a MSD ignition. Engine will continue to run with the ignition off. MSD recommends a one way diode on either the "brown" alternator wire or the charging lamp indicator. I'm not sure where I should install the diode on an 88 Fiero with stock alternator. Is there a wire on the alternator harness I have to tap into or can I tap into the voltage gauge? not good at wiring so speak slowly
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jelly2m8
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Report this Post09-09-2025 04:06 AM Click Here to See the Profile for jelly2m8Send a Private Message to jelly2m8Edit/Delete MessageReply w/QuoteDirect Link to This Post
Its wired wrong, the coil power needs to be wired to the Ignition switch directly, Pink wire from the original harness.
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Tappy350
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Report this Post09-09-2025 09:06 AM Click Here to See the Profile for Tappy350Send a Private Message to Tappy350Edit/Delete MessageReply w/QuoteDirect Link to This Post
That would be great news I’ll look into that today
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Tappy350
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Report this Post09-09-2025 02:28 PM Click Here to See the Profile for Tappy350Send a Private Message to Tappy350Edit/Delete MessageReply w/QuoteDirect Link to This Post

Tappy350

17 posts
Member since Jan 2017
 
quote
Originally posted by jelly2m8:

Its wired wrong, the coil power needs to be wired to the Ignition switch directly, Pink wire from the original harness.


That took care of the issue thanks again!
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