Packard Forum Index » Post-War (1946-54)

Hi Everyone,
My mechanic was checking the electrical system on the wiper motor of my 47 Custom. I have a complete electrical system schematic for him to follow as he checks. He says that power is getting to the wiper motor but not to the switch on the dash that controls the wiper on/off and speed controls. He believes it's the circuit breaker at fault but hasn't worked on those units.
What is the process of replacing the circuit breaker? What type is used, and is it a protracted process to fix? Could it be another issue that's causing the switch not to operate effectively?
All help is greatly appreciated!
Dave

Packard used at least 2 versions of the S-W electric wiper and I don't know if this 645-E version was on the Clipper or conventional body. There is a paragraph on changing this version breaker on page 3 so even if the wrong version for your car it might help.

EDIT: Just found another older post that said the 47 Clipper used the 645-H version and that E info won't help. We don't have any H version info on site so if anyone has something they could scan and contribute it would be appreciated.

There is also a 1945 patent update with improvements that shows different drawings from the earlier version -- unknown if it is the H -- and downloading and reading thru the description and drawings on that patent might give some clues how the breaker can be removed.