Fusible link help
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Tuned
Joined: Nov 2009
Posts: 250
Likes: 1
From: Austin, Tx.
Fusible link help
Searched the forum, but didn't find an answer.
PO apparently replaced the fusible link from the alternator to the starter relay with a regular piece of wire.
I would like to fix it, to keep from burning the truck down, but, what size should this fusible link be?
It's my sig truck, but the alternator is a 2G, instead of the 1G original, amperage unknown.
PO apparently replaced the fusible link from the alternator to the starter relay with a regular piece of wire.
I would like to fix it, to keep from burning the truck down, but, what size should this fusible link be?
It's my sig truck, but the alternator is a 2G, instead of the 1G original, amperage unknown.
MSEE
Joined: Apr 2004
Posts: 10,386
Likes: 35
From: Austin, TX
Hello neighbor. The rule of thumb that I've been told is that a fusible link should be sized 2 sizes down from what it protects - for example, if you're protecting a 10-gauge wire, then you should use a 14-gauge fusible link. So naturally, it depends on the size wire coming from your alternator output to the solenoid battery-side terminal. Unfortunately, I can't say what that should be. Obviously it would depend on the load placed on your electrical system and how much the alternator must output at peak demand. Hopefully someone else can chime in with some more application-specific info, but at least that's a start.
Moderator
Joined: Jan 2001
Posts: 57,025
Likes: 2,758
From: Virginia
In 86, they do show a green 14 gauge fusible link in the alternator wire. It's in this diagram.
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