Question Wiper motors ground isolation PROBLEM

hi, have bought 2 wiper motors from small French cars ( peugeot 206 and renault ). They look identical (as per photos) but cannot succeed with ground isolation. HELP PLEASE.

i had the same problem and just connected the minus to the outside metal and the plus to the highspeed. just make sure you dont have a metal frame where the motor is attached. my build is made out of wood so there is never going to be any negative or positive running through the frame.

There are some motors that make contact at the bottom of the PCB, on some occasion I have disassembled and placed insulating tape on the bottom. Check all points where it may be in contact with the chassis

yeah but its only a problem if you have a metal frame. if you are planning on building on a wooden frame just leave it. And use the outside of the motor on a blank piece of metal as a ground. maybe sand it down a little for better contact.

Thanks. Thinking of using wooden frame for trials but later on, I'll need to use metal frames.
Perhaps, I'll be able to isolate connections instead

Thanks, will try.

One option could be to directly solder the cables to the brush mesh and thus leave the pcb board aside, check between the brush mesh and the chassis if you have continuity, if you don't you already know what could be a solution

or maybe just test with these motors on the wooden frame, get it to work etc. and build a new better version with normal motor`s?

You already have several solutions, use the one you like best

https://www.xsimulator.net/community/faq/wiper-motor-mandatory-ground-isolation.25/