Pre-Power Stroke Diesel (7.3L IDI & 6.9L) Diesel Topics Only

Which wires to switch around on auto to manual swap?

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  #1  
Old 06-10-2012, 10:22 PM
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Which wires to switch around on auto to manual swap?

i havent taken any of the Auto wiring out yet. will the truck start without the mlps and solenoid packs plugged in? or if i plug the clutch interrupt switch in will everything work?
when it was still auto the mlps was loose and wouldnt turn over..
Which wires do i splice into the manual for reverse lights to work?
Truck is a 91, no cruise
 
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Old 06-11-2012, 10:15 AM
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Originally Posted by 91dirtydiesel
left is the e4od, right is the zf5

<a href="http://s1095.photobucket.com/albums/i463/91dirtydiesel/?action=view&amp;current=bb9b9b97.jpg" target="_blank"><img src="http://i1095.photobucket.com/albums/i463/91dirtydiesel/bb9b9b97.jpg" border="0" alt="Photobucket"></a>

transfer case to tranny

<a href="http://s1095.photobucket.com/albums/i463/91dirtydiesel/?action=view&amp;current=c2d0b7a4.jpg" target="_blank"><img src="http://i1095.photobucket.com/albums/i463/91dirtydiesel/c2d0b7a4.jpg" border="0" alt="Photobucket"></a>

plug from the zf5 to main harness

<a href="http://s1095.photobucket.com/albums/i463/91dirtydiesel/?action=view&amp;current=65842066.jpg" target="_blank"><img src="http://i1095.photobucket.com/albums/i463/91dirtydiesel/65842066.jpg" border="0" alt="Photobucket"></a>

t case speedo

<a href="http://s1095.photobucket.com/albums/i463/91dirtydiesel/?action=view&amp;current=05d739a0.jpg" target="_blank"><img src="http://i1095.photobucket.com/albums/i463/91dirtydiesel/05d739a0.jpg" border="0" alt="Photobucket"></a>

by the 4x4 linkage

<a href="http://s1095.photobucket.com/albums/i463/91dirtydiesel/?action=view&amp;current=9dc48c2d.jpg" target="_blank"><img src="http://i1095.photobucket.com/albums/i463/91dirtydiesel/9dc48c2d.jpg" border="0" alt="Photobucket"></a>

on the transmission

<a href="http://s1095.photobucket.com/albums/i463/91dirtydiesel/?action=view&amp;current=7ffdfcd2.jpg" target="_blank"><img src="http://i1095.photobucket.com/albums/i463/91dirtydiesel/7ffdfcd2.jpg" border="0" alt="Photobucket"></a>
That's how mine was
 
  #3  
Old 06-11-2012, 10:57 AM
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thanks for the pics but im still confused. so i need a different wiring harness? mine is only 2wd. my speedo is just mechanical. My trans only has two prongs for reverse..no provisions for any other plugs..

Im just scared the engine wont run because the auto stuff is unplugged..
 
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Old 06-11-2012, 11:41 AM
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The motor is mechanical nothing will effect the motor running as long as the IP has power...The trans I cant tell you except the neutral safety switch is the only thing that will make the truck not turn over.

P/O is power hot run
BK/PK is reverse lights
R/LB starter relay
W/PK is hot start
 
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Old 06-11-2012, 12:55 PM
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Thanks guys, i also figured if the nautral safety switch is plugged jnto the clutch it should be ok.
 
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Old 06-11-2012, 12:56 PM
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the only wiring you really need to worry about is the neutral safety switch wires, thats the circuit that prevents you from cranking the engine when in gear. ideally this pair of wires would be connected to a switch on the clutch, or just connected to each other.
start by taking out what you have there. the transmission runs off its own computer that doesn't affect the engine, except for that neutral safety switch. it shouldn't be hard to figure out which pair of wires it is and bypass it
 
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