I've looked all over the internet for wiring diagrams on the 4.9L Seville when doing the wiring for my swap. I couldn't find them anywhere, plenty of Deville wiring diagrams. But they are really different. My particular engine was from a '92 Seville STS, so I decided to post up diagrams I got from Demand 5, hopefully they will help someone else out in the future.

1992 Seville Charging Circuit


1992 Seville Instrument Cluster


1992 Seville Ignition Switch


1992 Seville Fuse Circuit


1992 Seville ECU and powertrain control


1992 Seville Alternator


1992 Seville Cooling Fan Relays


And here is the info I dug up on the Fiero side:

88 Fiero Starting Circuit


88 Fiero Charging Circuit


88 Fiero ECU


88 Fiero Instrument Cluster


88 Fiero Cooling Fan Circuit


Please feel free to use these for your own personal needs or in your forum threads and how to builds.

Chris

Thanks for posting these. Subbed for future reference...

Robert

bump, cus I need some info off this

Chris

I don't need them but a + for you for taking the time to share the info!

Nolan

Very nice. The seville diagrams are one of the things us 4.9 owner have not see much of. These differ from the normal deville diagrams in a few key ways. Thank you for sharing them.

Geez... Photobucket again. I guess I'll have to archive these, because they won't be here next year.