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Old 01-12-2012, 12:28 PM
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1984 305 wiring

I'm in the process of puttin a 305 in my truck and all I need to do is wire it and hook up vacuum lines..problem is I'm not sure how to do either one..please help

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Old 01-12-2012, 02:08 PM
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Identify component, verify vacuum source type, and attach hose.
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Old 01-12-2012, 02:33 PM
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What about wiring? Can you help with that?
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Old 01-12-2012, 02:39 PM
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Wiring help needed

In desperate need of help wiring my 305..maybe a wiring diagram?
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Old 01-12-2012, 03:34 PM
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wiring dia ?????

are u looking for the firing order?? or wire up the dizzy ??? what yr and what dizzy are u using ???? i failed mind reading..
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Old 01-12-2012, 03:50 PM
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It's an 84 I do believe...I know the firing order..I more or less need to know what wires go where from the firewall to the motor
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Old 01-12-2012, 04:19 PM
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Welcome to the board, but...read the guidelines, I merged your two threads together, please don't double post.
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Old 01-12-2012, 08:20 PM
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Oh ok sorry
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Old 01-14-2012, 04:40 PM
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If the original wiring is still intact, There are very few wires required to connect to the engine.

There is a wiring loom that runs across the back of the engine compartment near the left valve cover. That has these wires:
- wires running to the alternator BAT terminal and the two wire plug on the alternator (3 wires).
- start wire and fuse box power wire running down to the starter (2 wires)

There is also a power wire running to the HEI, and there may be a tach wire running to the HEI.

You also need the large (red) battery cable running from the positive battery terminal, and the black battery cable from battery negative to a ground point on the alternator bracket or engine block.

Other wires you may have:
- A/C compressor (dark green)
- temp gauge sensor (green)
- choke power wire (color?)
- A/C idle solenoid

Bruce
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