Newer Style Master Cylinder Swap

[Rembrant]

Vic Roma wrote

Which pigtail fits the BRMC63?

I don’t know if you can buy it or not. I don’t see it on Rock Auto. I grabbed a couple at the junkyard, one to install and a second for a spare. There are three wires, common and n/o and n/c. I have mine set up so that the low fluid level will make my Brake light come on.

[ArdWrknTrk]

Cory, if you can find an engineering number we might match it up to the Motorcraft wiring pigtail catalog.

[Rembrant]

I found two of them in my stash.

[ArdWrknTrk]

There is one similar to that in the catalogue.



I can't say for sure.
I really need to dig in to the parts catalogue, and that's a challenge on my phone.

[ArdWrknTrk]

Digging a little deeper I find that Motorcraft Wiring Pigtail #'s WPT1001 and WPT446 seem the same and are used for many things.
Inertia switch connector, automatic temperature control, tailgate lock, brake warning switch, ect..


In the aftermarket we find:

Dorman 645-920
Auveco  23180
Carpak  96-7552
Wells   870
Airtex  1P502
AutoZone 1P1502
Carquest 57-5283

[Rembrant]

ArdWrknTrk wrote

Digging a little deeper I find that Motorcraft Wiring Pigtail #'s WPT1001 and WPT446 seem the same and are used for many things.
Inertia switch connector, automatic temperature control, tailgate lock, brake warning switch, ect..


In the aftermarket we find:

Dorman 645-920
Auveco  23180
Carpak  96-7552
Wells   870
Airtex  1P502
AutoZone 1P1502
Carquest 57-5283

Well ain't that cool. Very good to know Jim.

[Vic Roma]

Deleted my last post because my email didn't show the above posts with the same info I just wasted time finding. Sorry people.

Thanks for your help. I'm now going shopping...

[scbill]

I picked up a master cylinder @ upull off a 93 F100 with a 1 1/8" bore, the BRMC 63 is 1 1/16".
Will the difference make braking harder, or easier, or will you be able to tell the difference?

Thanks, Bill

[Gary Lewis]

Not sure what "BRMC 63" means, but a larger bore means more volume but less pressure.  So I think you'll have to press down harder to get the same stopping results.