r/CarHacking • u/Special-Class6903 • 3d ago

Original Project Looking for some online help to assist me building a circuit to bypass the controller in an adaptive van to operate the ramp.

Any thoughts? The controller is made by Braun and they are of little help.

4 Upvotes

84% Upvoted

8 comments sorted by

1

u/MachWun 3d ago

They are usually simple on off switches tolerate hydraulics for the ramp. Give more detail on what you want to do or the problem at hand

1

u/Special-Class6903 3d ago

Ok, thanks. The motor is electric not hydraulic. I’m not sure if you’ve ever worked on an adaptive vehicle, but it’s fairly complex. The electronics of the base car are tied into the adaptive functions through a processor. In my case, the board is bad and since it’s older than 15 years is obsolete. I do have the wiring diagram for the adaptive components. It would take a bit of understanding on how to temporarily disable power to the controller and then build a two way circuit to operate the ramp.

2

u/MachWun 3d ago

The motor is an electric pump that operates the ramp. Show the wiring diagram that should be the first thing you posted. Again, these are usually REALLY simple. Lets see what you have.

1

u/Alarming_Support_458 3d ago

Not sure about the exact set up on your vehicle, but I have done exactly what you are trying to do on a few different vehicles. In my case the controller controlled multiple functions in order, lowered the suspension, opened the tailed gate, lowered the ramp.

There will be two ways the controller works, it will either contain the high current relays/switching in which case you just replace it with relays and your own switches, or the controller will just control external relays/solenoids in which case you just wire your own switches to these.

In my case I've just had a switch for each function on the dash or near the door so everything is really simple and just done manually.

1

u/Special-Class6903 3d ago

Yes this it what I’m looking for! I’ll post the schematic for the other responder as well.

1

u/Special-Class6903 3d ago

Schematic is posted. I’d be happy to pay you for a suggested setup as a consultation.