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| | | | Joined: Apr 2011 Posts: 106 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2011 Posts: 106 | So I just finished up wiring my 40 using an EZ Wiring 20 mini harness. Everything went smooth with the installation. I connected the battery to test it out, ans immediately the fuseable link coming off the starter melted.
Any ideas on what to check first?
1940 Chevy 1/2 ton, 12 volt, 350/350th
| | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy stevebolt, you will have to check every circuit fed by that fuseable link, so check your wiring diagram and start checking the individual circuits, good luck. | | | | | Joined: Apr 2011 Posts: 106 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2011 Posts: 106 | Hy stevebolt, you will have to check every circuit fed by that fuseable link, so check your wiring diagram and start checking the individual circuits, good luck. Thanks, but then why didn't a fuse blow? Why did the fuseible linke burn up first? Is there something specific I should check first? Or just start circuit by circuit. What a bummer. I thought I'd be cruising tomorrow.
1940 Chevy 1/2 ton, 12 volt, 350/350th
| | | | | Joined: Feb 2004 Posts: 29,814 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,814 | The fuse link only blows if there's a massive short somewhere. Disconnect the output wire from the alternator (if it's got one) and the wire from the battery cable connection at the starter going to the ammeter. (That's probably the fuse link, right?) It sounds like you've got a BIG 12 volt supply wire connected to ground, like maybe the one to the fuse block, or a shorted-out alternator rectifier.
Jerry
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| | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy stevebolt, that would indicate that you have a major short before your fuse block, check the wiring diagram to see where the major draws are, and how the circuits are fed before the fuses. Do you know the amperage capability of the fuseable link? | | | | | Joined: Apr 2011 Posts: 106 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2011 Posts: 106 | Update: The BATT terminal of my alternator was shorting to ground. The threaded post was broken inside the alternator. So I just replaced the alternator and the fusible link, and connected the battery and... no smoke! I love the smell of no smoke.
I've got some other little things to figure out, but at least this one was easy.
1940 Chevy 1/2 ton, 12 volt, 350/350th
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