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Idahome
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The wiring!
easy easy when you have done this a bunch before and it all starts to make sense
So for our conversion here we have a 98 truck getting a 97 explorer 5.0 drivetrain. The 98+ ranger is returnless fuel rail and uses a starter relay in the power box. The 97 sploder still used a fender mounted starter relay. The ranger v6 has the alternator voltage regulator power and dash battery light feeds coming through the 42 pin c112 (c115 for explorer dudes) connector. The 5.0 explorers have a separate harness for the alternator. So it is my job to combine the two. Here is how it is done.
First we use the 5.0 starter and battery wiring harness, it just makes things easier then trying to modify the v6 starter wiring since the v6 starter is on the wrong side of the engine LOL
First up, look ma a V8!
Note to self, rear post is alternator feed, front post is battery terminal
Whats left of the V6 starter harness and whats removed from the v8 starter / alternator harness:
5.0 Alternator wires (yellow/white and green/red) are re routed to the 42 pin connector. Pin 41 is the green / red battery light from instrument cluster, pin 42 is the voltage regulator power dist feed.
Next
from the 98 Ranger we have this square plug on the drivers fender apron (blue square).
This plug contains the AC compressor clutch wiring and AC high pressure switch (green box).
Also contains the yellow/white "starter go" feed from ignition/power dist box starter relay. (red box)
The battery power terminal feed to power dist box comes up from the explorer 5.0 harness. (orange box) and the power charging cable from the alternator comes from the 5.0 harness (orange box)
The Explorer starter relay wiring is cut apart and separated, one feed goes to starter wire (small red wire in red box)) and the large red wire goes to power dist box (large red wire in orange box)
Simple right?
Now time to solder the connections, wrap the whole deal up, route it properly and the wiring for this conversion is DONE
First I need to add a female pin to the green/red alternator wire so it can become pin 41 on the engine side. Also have to drill a new hole so the pin can be inserted (explorer side had no pin 41)
The yellow alternator wire is wrapped into pin 42, the black with white power dist feed
drilling new spot for pin 41
done
Here you can see the explorer starter harness wires cut separate and trimmed down a bit to fit the power dist box lug
red starter signal wire to 5.0 starter soldered to yellow/white ranger v6 starter signal wire
Ac wiring stays with the truck and plugs right into the 5.0 compressor clutch and high pressure switch. (EDIT I found out The AC needs some wiring to convert from explorer to ranger, more on this later)
That's it folks, that's all the wiring needed here, one of the EASIEST conversions there is, 99% plug and play
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I build custom RBV, specializing in drivetrain conversions, wiring, suspension and complete custom trucks