1973 Ford Bronco
Owner: muddybronco         (All of this user's registries on SuperMotors)
From: Maumelle, AR, U.S.A.        (Other registries in AR)
Year, Make, & Model: 1973 Ford Bronco        (Other Ford Broncos in this club)
Avatar:
Clubs: SuperFord.org        (Other vehicles in this club)
Nickname: Alex's Silver Stallion
Mileage:
Engine: Explorer 5.0
Drivetrain: 4R70W
NP205
Notes:
Last Updated: 7/3/2021
Hits: 996
Album
Folder Hits Comments Created Updated
folder Explorer 5.0 and 4R70W swap33003,59505/4/217/3/21
Newest Media Files
PXL_20210603_012628818.jpg
107 hits | 59.23 KB | Posted: 7/3/21

The test drive was awesome! This thing flies compared to when it had the 302 and C6. It even leaves rubber across peak torque in first gear. Skurrr!
PXL_20210603_002916741.jpg
108 hits | 116.85 KB | Posted: 7/3/21

We were adjusting the shift linkage when a cloud of stinky smoke came out from under the hood. We feared the worst since it looked to have come from around the firewall area and tracking down a wiring issue that would kill the PCM would take forever...
PXL_20210602_235927354.jpg
122 hits | 84.8 KB | Posted: 7/3/21

The finished product! It turned out fairly clean but it sure would've made sense to paint the engine bay before we dropped the 5.0 in. Learn from our mistakes!
PXL_20210518_012900500.jpg
112 hits | 127.35 KB | Posted: 7/3/21

We had cut a section out of the throttle bracket at the bottom and weld it back together to clock the bracket down so the cable didn't point up into the hood brace. It did reduce the throttle travel so that the throttle body only opens to 88% of WOT...
PXL_20210516_214632163.jpg
158 hits | 133.29 KB | Posted: 5/18/21

Arial view of the PDB. These wires now have split loom protecting them. To the right of the PDB you can see C123 which has the Yellow/White PDB constant 12V wire to the alternator and the Lt Green/ Red wire that goes from the alternator to the dash...
PXL_20210516_214613037.jpg
141 hits | 130.09 KB | Posted: 5/18/21

This still needs a little cleanup but it's just a busy area for wiring. C115 splits into 3 groups here:
-The 7 factory circuits to the PDB
-The wires through the firewall to the dash area
-To the passenger fender area: the 3 C115 ground wires, RU...
PXL_20210516_214547000.jpg
149 hits | 140.28 KB | Posted: 5/18/21

The Explorer starter solenoid coil grounds through its case so we removed the paint from the wheel housing underneath it. Also grounded to the mounting stud are the fuel pump, PCM relay, and RUN/START relay. The green ground goes to the ODB2 port. ...
PXL_20210516_214536125.jpg
157 hits | 133.73 KB | Posted: 5/18/21

Since the Bronco doesn't have a true RUN/START circuit from the factory, we created one with a bridge rectifier and a relay. Two individual diodes would work instead but the bridge is easy to mount. The diodes keep the RUN circuit from activating t...
PXL_20210516_214512082.jpg
152 hits | 129.28 KB | Posted: 5/18/21

Eight lonely fuses, two relays, and a diode are all that's left.
Most Viewed Files
PXL_20210428_151930344.jpg
166 hits | 134.75 KB | Posted: 5/4/21

Chomp! Cut the main harness just past the relay box, which is in the area behind the driver's headlight. Removing the harness from the Explorer past that point is not required but I do it because I cut the whole front clip off to make it easier to ...
PXL_20210516_214632163.jpg
158 hits | 133.29 KB | Posted: 5/18/21

Arial view of the PDB. These wires now have split loom protecting them. To the right of the PDB you can see C123 which has the Yellow/White PDB constant 12V wire to the alternator and the Lt Green/ Red wire that goes from the alternator to the dash...
PXL_20210516_214536125.jpg
157 hits | 133.73 KB | Posted: 5/18/21

Since the Bronco doesn't have a true RUN/START circuit from the factory, we created one with a bridge rectifier and a relay. Two individual diodes would work instead but the bridge is easy to mount. The diodes keep the RUN circuit from activating t...
20200829_143523.jpg
156 hits | 111.42 KB | Posted: 5/4/21

PXL_20210516_214433510.jpg
155 hits | 82.41 KB | Posted: 5/18/21

This is the alternator charge light and it does need to be a bulb rather than a LED, preferably with a 470 ohm resistor in parallel in case the bulb burns out.
PXL_20210516_214512082.jpg
152 hits | 129.28 KB | Posted: 5/18/21

Eight lonely fuses, two relays, and a diode are all that's left.
PXL_20210516_214547000.jpg
149 hits | 140.28 KB | Posted: 5/18/21

The Explorer starter solenoid coil grounds through its case so we removed the paint from the wheel housing underneath it. Also grounded to the mounting stud are the fuel pump, PCM relay, and RUN/START relay. The green ground goes to the ODB2 port. ...
PXL_20210516_214613037.jpg
141 hits | 130.09 KB | Posted: 5/18/21

This still needs a little cleanup but it's just a busy area for wiring. C115 splits into 3 groups here:
-The 7 factory circuits to the PDB
-The wires through the firewall to the dash area
-To the passenger fender area: the 3 C115 ground wires, RU...
PXL_20210428_161815275.jpg
138 hits | 138.28 KB | Posted: 5/4/21

Ahhh, scary wiring! This is after cutting off the 3 firewall connectors. Lots of wires can be removed at this point because they went from the firewall connectors to the big harness cut so they are now cut on both ends. I leave the 7 wires going f...
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