Results 1 to 8 of 8

Thread: Aftermarket power distribution center installation

  1. #1
    Super Moderator Turbo Mopar Staff 135sohc's Avatar
    Join Date
    Aug 2008
    Location
    SoMd
    Posts
    6,055

    Aftermarket power distribution center installation

    Things are coming along nicely. Having access to CNC sheet metal cutting and press brake capability really makes things like this possible. For the circuit layout/distribution I just sat down with the Eaton technical drawing and the chrysler service manual and figured out where to route things. For fuse sizing I did a few things of which all I fully disclaim:
    -Proceed at your risk-

    The J body (and G body) cars on the last few years of their production came with a PDC. Circuitry wise there really is not much difference between a G/J body and something like the P body (or the A body) for the basic circuits. The P body is probably the most simplified of the later K based cars because we have no BCM or BUS system to contend with. Everything is more or less 'point to point' on where it goes.

    Study the service manual and see the breakdown of how Chrysler did it with fusible links (P body) or with real fuses (J body). For the most part those were almost a one to one conversion. Where it got a little more involved is not every circuit has the same distribution branch out. For those I did some rough load calculations and swayed to the side of caution. My particular P body is rather plain on the options so that also was factored in.

    As a secondary check I also have a 2002 Ram 1500. The PDC on that truck is super detailed and very broken down. The a/c clutch is called out @ 10 amps, a/c condenser fan (similar fan motor as the shadow) is 20 amps, the fuel pump is 15 amps ect. The estimates I came up with were more or less the same as those so I went with them

    It also helps for comparison that it uses the same mini style fuses as the Eaton unit I am using. One factor that I am keeping in mind is the amperage limitation of any one circuit is 30 amps because of the metri-pack 280 terminals. On a few circuits I will be running them at 30 amps... a little uncertain but they do rate it for that.

    For the alternator feed I am using a 100 amp MIDI fuse and the battery + feed going into the PDC will also have a 100 amp MIDI fuse inline somewhere.

    As a final closing note on the PDC I am using. It switches on the negative/return side of the relay coil, the positive side of the coil is powered off of the same fused portion of the circuit that is the incoming power. For the OEM circuits that are controlled that way it (should) work seamlessly. For the circuits that are switching via a power + signal like the starter relay and in my case the low and high headlight circuits that are using the original power feed as the signal for switching the relay that becomes a problem. I am keeping the add on fuse block I did earlier this year for the headlights and putting the starter relay into that.

    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	DSCN0394.jpg 
Views:	74 
Size:	1.15 MB 
ID:	65616   Click image for larger version. 

Name:	DSCN0395.jpg 
Views:	74 
Size:	1.05 MB 
ID:	65617   Click image for larger version. 

Name:	DSCN0396.jpg 
Views:	73 
Size:	1.14 MB 
ID:	65618   Click image for larger version. 

Name:	DSCN0397.jpg 
Views:	73 
Size:	902.7 KB 
ID:	65619   Click image for larger version. 

Name:	DSCN0398.jpg 
Views:	73 
Size:	1.10 MB 
ID:	65620   Click image for larger version. 

Name:	DSCN0399.jpg 
Views:	72 
Size:	1.01 MB 
ID:	65621  

    1994 Shadow Sedan. 2.2 N/A, A568 389,000 miles. "the science experiment"
    1987 Shelby CSX #418. Long term rebuild and restore ?

  2. #2
    Super Moderator Turbo Mopar Staff 135sohc's Avatar
    Join Date
    Aug 2008
    Location
    SoMd
    Posts
    6,055

    Re: Aftermarket power distribution center installation

    ASD relay 20 amp
    Fuel pump relay 15 amp
    A/C clutch relay 10 amp
    Fan relay 20 amp

    Individual circuits

    A2-30 amp
    IOD-10 amp
    A1-20 amp

    A3-30 amp
    Hazard flasher-20 amp
    A14-10 amp

    The original A14 circuit to the SBEC pin 3 (battery voltage) was spliced off of the fuel and ASD relays. For simplicity I opted to make it its own standalone circuit.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	DSCN0400.jpg 
Views:	9 
Size:	993.6 KB 
ID:	65622  
    1994 Shadow Sedan. 2.2 N/A, A568 389,000 miles. "the science experiment"
    1987 Shelby CSX #418. Long term rebuild and restore ?

  3. #3
    Supporting Member II Turbo Mopar Contributor
    Join Date
    Feb 2015
    Location
    toronto
    Posts
    1,582

    Re: Aftermarket power distribution center installation

    Very nice writeup thank you
    Regards,
    Miles

    DD '87 Sundance T1, SLH with rear disks
    '87 CSX #432 2.5 CB TII, SLH

  4. #4
    Super Moderator Turbo Mopar Staff 135sohc's Avatar
    Join Date
    Aug 2008
    Location
    SoMd
    Posts
    6,055

    Re: Aftermarket power distribution center installation

    Slight revision of plans. Looking closer at the amperage limits of the ISO 280 ultra-micro relay being @ 20 amps in the normally open mode. Not really sure what the starter solenoid actually draws when its going but I do not want to find out the hard way. For that circuit I will be going back to a conventional big cube relay mounted on the inner fender. Fed from its own dedicated fused power supply.
    1994 Shadow Sedan. 2.2 N/A, A568 389,000 miles. "the science experiment"
    1987 Shelby CSX #418. Long term rebuild and restore ?

  5. #5
    Supporting Member II Turbo Mopar Contributor minigts's Avatar
    Join Date
    Dec 2005
    Location
    Memphis, TN
    Posts
    6,817

    Re: Aftermarket power distribution center installation

    Man that looks great for a DIY, excellent work!!!!


    Jon Trotter

    1985 Dodge Shelby Charger, Currently decommissioned
    1987 Shelby GLHS, #937
    1987 Shelby Lancer, #628

    Quote Originally Posted by Reeves View Post
    I can be ready. Please send pics of wife.
    _____DodgeZ add comments here______

  6. #6
    Rhymes with tortoise. Turbo Mopar Staff cordes's Avatar
    Join Date
    Dec 2005
    Location
    Tuscola, IL
    Posts
    20,677

    Re: Aftermarket power distribution center installation

    That looks awesome. I really need to do something like this.

  7. #7
    Super Moderator Turbo Mopar Staff 135sohc's Avatar
    Join Date
    Aug 2008
    Location
    SoMd
    Posts
    6,055

    Re: Aftermarket power distribution center installation

    Remy battery informed me two of the terminal lugs I wanted are OOS for two weeks. Wanted to get the bulk of the wiring conversion done over the next few days and then only have the positive cable to remake. Since this has hit a stoppage I decided to paint the pieces and do some testing on circuit loads. 7.5 amps seems be enough for the a/c clutch and 15 amps is enough for the radiator fan so far.
    1994 Shadow Sedan. 2.2 N/A, A568 389,000 miles. "the science experiment"
    1987 Shelby CSX #418. Long term rebuild and restore ?

  8. #8
    Super Moderator Turbo Mopar Staff 135sohc's Avatar
    Join Date
    Aug 2008
    Location
    SoMd
    Posts
    6,055

    Re: Aftermarket power distribution center installation

    Since I am on hold for ~2 weeks~ I decided to make this full on legit and ordered some color coded wire for the big circuits where things may come up short. Rhode Island Wiring Service was the source. I know how much the prices were on their website, no idea what they were today and how much the shipping will cost. Guess I'll find out when the box arrives.
    1994 Shadow Sedan. 2.2 N/A, A568 389,000 miles. "the science experiment"
    1987 Shelby CSX #418. Long term rebuild and restore ?

Similar Threads

  1. Aftermarket gauge power source?
    By Mudman in forum Electrical & Fuel System
    Replies: 3
    Last Post: 11-18-2021, 06:23 PM
  2. Power distribution center (PDC) replacement - under the hood
    By minigts in forum Electrical & Fuel System
    Replies: 13
    Last Post: 05-03-2021, 08:07 PM
  3. power distribution center in an 86 turbo z
    By scarface1689 in forum Electrical & Fuel System
    Replies: 27
    Last Post: 12-23-2011, 07:26 PM
  4. Power Distribution Box.
    By 85LEBARON in forum Electrical & Fuel System
    Replies: 0
    Last Post: 05-28-2008, 10:12 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •