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Old 07-16-2005, 05:57 AM
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Junction Block

OK when it comes to electrics I'm stupid.

Can someone tell me what a "junction Block" does?

I have one on my 89 Silverado in the engine bay behind the relay cover and noticed the alternator wire (thick one) goes to it and nothing else is connected to it

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Old 07-16-2005, 08:26 AM
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In older cars all the main power was tied together at the solenoid. Newer cars use a junction box. The red wire is probably for an option you don't have in your truck. Possibly trailer power.
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Old 07-16-2005, 12:45 PM
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My truck is an 89

I followed the red wire on the alternator and it went to the junction box. No other wires meet up with it
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