FIRST.....I DON'T USUALLY USE A POWER WASHER ON MY (GAS) MOTORS.....AND SINCE YOU SAY IT IS A BAD IDEA ON OUR OLDER TRUCKS.....HOW DO I WASH MY MOTOR.....DO I JUST USE THE CLEANER AND A WATER HOSE?....OR DO I JUST BUCKET RINSE THE MOTOR?.....Never, use a Power Washer on 20 year old wire harnesses.
Water Intrusion was my biggest problem with Fire Trucks, worked on them for 20 years.
the corrosion develops shorts between stuff that should not ever be there, and it hides way back into the harnesses where you cannot easily see it.
SO.....YOU DON'T RINSE OFF THE CLEANER?....YOU JUST WIPE OFF THE EXCESS AND THE DIRT?....I use a bucket of cleaner solution, paint brush, and lots of shop rags.
Rub the solution on and let it soak, wipe it off best you can...
Use Brake cleaner spray in tight spots if the 'dirty look' bothers you.
more shop rags/towels.
you taking things out of context, I would finish up with hot water, but making damn sure the wiring harness did not get wet.SO.....YOU DON'T RINSE OFF THE CLEANER?....YOU JUST WIPE OFF THE EXCESS AND THE DIRT?....