Progressive Dynamics 4000 to Replace WF8955PEC

Updated 03/25/2025 | Published 03/12/2025

Question:

I want to replace my WF 8955PEC power converter with the Progressive Dynamics 4000 Series RV Converter w/ Charge Wizard and AC/DC Distribution Panel - 60 Amp so I can take advantage of lithium batteries. Is this the proper switch? Should I be able to complete this myself pretty handy?

asked by: James

Expert Reply:

Hey James, yes the Progressive Dynamics 4000 Series part # PD4060K would be correct to replace what you have now and does have a Lithium battery charge profile. You could definitely install this by yourself.

expert reply by: Jameson C

Jamea

3/25/2025

Installed the PD4060 into my travel trailer. Trying to finish up wiring on the DC side. I have a battery disconnect provided by Winnebago near the battery box. The white battery wire (-) goes to the negative battery terminal post in the converter, but having trouble with the single red (+) positive cable. Do I keep the jumper in and connect the positive to the battery positive post or do I remove the jumper and connect the positive red battery wire to the positive DC post (lower right on the jumper)? Thanks for any help you can give.

Jameson C.

3/25/2025

@Jamea I've pulled up the wiring diagram for the PD4060K and I don't see any red wires actually. I attached a link to the diagram to this message for you to check out. Let me know which circuit you are referencing.

Helpful Links

instructions.aspx?pn=pd4060k

James

3/25/2025

@JamesonC The red (+) battery wire is the same as a black (+) battery wire (interchangeable). I have these same instructions that came with the PD4060 power converter (still as clear as mud to me). I need to know what each of the connections on the DC side do. If you take out the jumper what does the battery (+) positive connector on the top left of the jumper supply? What does the alternate battery (+) positive + dc disconnect on the lower right of the jumper supply?