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From: Out Where the Buses Don't Run, Eglin AFB/ Niceville FL
2025 C8 Z06/7/E-Ray of the Year Finalist - Unmodified
2022 Corvette of the Year Finalist -- Modified
2021 C6 of the Year Winner - Modified
2020 C7 of the Year Finalist -- Modified
2020 C6 of the Year Finalist - Modified
Originally Posted by C5 Diag
Well if the horn doesn't work it takes 2 minutes to check with a test light...both the load and control sides are fed from the 350 amp fuse...you can see some of the circuits that are powered by that fuse...these circuits are "hot at all times"...if no power on 2 of the relay terminals check if the 350 amp fuse is blown...if you don't follow a systematic approach to diagnosing this with the wiring schematics and a DMM and test light you will not be successful !!...having a factory level scan tool either OEM or aftermarket will help immensely...I'd STRONGLY suggest to the owner NOT to take a car to an indie shop or dealership...the techs there can't even diagnose a light bulb circuit !!...I've seen it !!...go to an auto electric shop or a diagnostician.
Everything you said that should check hot does. I did get the horn working. I'm pretty sure that the 30A fuse wasn't making good contact as it was pretty corroded. New fuse and now the horn works. The owner is having it towed tomorrow morning. I'll find out where they're taking it tomorrow.
Thanks again for all of the assistance but it's time for me to bow out.
From: Out Where the Buses Don't Run, Eglin AFB/ Niceville FL
2025 C8 Z06/7/E-Ray of the Year Finalist - Unmodified
2022 Corvette of the Year Finalist -- Modified
2021 C6 of the Year Winner - Modified
2020 C7 of the Year Finalist -- Modified
2020 C6 of the Year Finalist - Modified
Just a quick follow up. Three things contributed to the no start and I'm pretty sure they were all related. The fuse block had lots of corrosion underneath. There was some rodent damage as well but repairable. The starter was bad as well and I think that may have been due to the wiring that the squirrels enjoyed. The car is back running again and thanks to you guys that chimed in (big thanks to C5 Diag) I may have been able to expedite the owner's repairs and saved them some labour costs. I gave the Corvette tech at the dealer everything you guys had me check and the all of the diagrams you posted. Again, I appreciate all of the inputs. It's what makes this forum the best.
Just a quick follow up. Three things contributed to the no start and I'm pretty sure they were all related. The fuse block had lots of corrosion underneath. There was some rodent damage as well but repairable. The starter was bad as well and I think that may have been due to the wiring that the squirrels enjoyed. The car is back running again and thanks to you guys that chimed in (big thanks to C5 Diag) I may have been able to expedite the owner's repairs and saved them some labour costs. I gave the Corvette tech at the dealer everything you guys had me check and the all of the diagrams you posted. Again, I appreciate all of the inputs. It's what makes this forum the best.
Glad you got it running !!...the "Corvette Tech" didn't need any input from us...he is supposed to be the EXPERT but then again highly unlikely !!
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.
