Electric Wiper Install
.getting a tool under there without removing the gauge panel would be impossible. I downloaded their instruction from their website and nowhere did it mention cutting anything out. As I stated before, it was a fairly straight forward installation, just remove the old vacuum motor and install the new unit. Of course there was a little finger gymnastics to get the mounting bolts in but compared to a lot of projects I've done on the truck this was pretty easy. I wish we were closer together and you could come over and see what I have done.Two pictures from their instruction sheet, both have the original mounting bracket in the picture. I don't know what part they say has to be removed. My suggestion is to make double sure you don't have to cut anything out, once cut out and then to find out you need it will be a pain to weld it back in. Another suggestion, which is a pain, is remove the gauge pack so you can have a better view point of what you have to work with.
Which unit are you installing? I bought just the motor replace on the left bellow. If you bought the center unit that's a completely different animal and I can see how there might be some cutting involved.
Addendum: I just went to the carpenter site and looked at the informat for the second style below. The .pdf instructions for the installation is less informative than the instructions for the unit I bought. From what I can understand from that sheet the main support comes from the wiper pillars going through the cowl and the two brackets mounting to the bottom lip of the dashboard. I can see why you would need to cut the bracket out. Just beware using this unit might make it hard to install a stock radio if you have one or want to install one in the future. I really don't know, maybe they designed it for a '48-50 truck with a stock radio, that could be the reason they list it as for a '48-50 truck specifically.
.getting a tool under there without removing the gauge panel would be impossible. I downloaded their instruction from their website and nowhere did it mention cutting anything out. As I stated before, it was a fairly straight forward installation, just remove the old vacuum motor and install the new unit. Of course there was a little finger gymnastics to get the mounting bolts in but compared to a lot of projects I've done on the truck this was pretty easy. I wish we were closer together and you could come over and see what I have done.Two pictures from their instruction sheet, both have the original mounting bracket in the picture. I don't know what part they say has to be removed. My suggestion is to make double sure you don't have to cut anything out, once cut out and then to find out you need it will be a pain to weld it back in. Another suggestion, which is a pain, is remove the gauge pack so you can have a better view point of what you have to work with.
https://www.dennis-carpenter.com/tru...-wiper-motor-k

Hopefully in the future someone who is seeking information on electric wipers will find some of the posts I made on this subject will be useful.
https://www.dennis-carpenter.com/tru...-wiper-motor-k
In a previous incarnation of my truck I tried to install an original '51/52 unit under the dash. I seem to remember I did have to butcher the bracket under the dash. I did this maybe 25 years ago. I had the cab apart and probably accessed the the bracket with the dash pack removed.
I was able to replace the original cab with a cab from a very low mileage donor cab from a fire truck. In the "new" cab I didn't want to do any cutting, and I as able to find a stock radio, so I was able to install the stock dual vacuum system from another donor truck and tried to make that work. It did work fine on the test runs in my driveway but after I got on the road for a long road trip in 2012 the wipers stopped working about 50 miles into the trip. This last long road trip I decided I didn't want to use RainX and decided to go with the electric motor replacement. I had all of the original hardware so just replacing the motor was my solution.
Last edited by bobj49f2; Dec 29, 2025 at 11:22 AM.
Is there a bracket that attaches to the dash screws and then to the motor/wiper assembly that supports it? Perhaps I am missing that piece. The motor has caged nuts that do not match the dash screws placement, did they attach to a bracket? Perhaps I am missing that bracket?
I appreciate the assistance.
Ford Trucks for Ford Truck Enthusiasts
Yeah, it does get confusing
I want to add the photos that Ross had requested. The numbers are printed and barely visible let alone decipherable they are painted on and I tried to clean as carefully as I could. The number resembles a Bosch part number, I didn't know they made motors that might fit our old trucks.
I may understand my problem, my truck came with the posts mounted but no motor attached, I bought the motor you see with attachments and removed what I had and tried to fit the entire new unit. It appears on of the connecting arms is bent, maybe in my installation or when it was removed from the donor. This may be the problem. I still don't see how this will fit if the motor attaches to the dash with just the two screws, it seems like the angles would be incorrect or that would make for an even tighter fit.
I'll swap out the connectors from the motor and attach what I had hanging originally and see if that will fit. I am so glad the seat is at the upholstery shop, now it's primarily the handbrake that knocks off my glasses.
still a mystery as to the voltage of the motor I will start with a reducer as suggested, once I get everything in, one step at a time. Does this look like a stock set up for a 51 F3?
Thanks, as always
Last edited by bmoran4; Dec 31, 2025 at 01:31 PM.
Does the wiper motor and attachments mount all as one unit, motor screwed into dash and posts fitted through body or does it attach separately, motor first then posts through body and arms attach to motor or vice versa? It was a challenge to get the whole thing posts and all through the body, this may have caused the bending of that one connector.
It does seem when the motor is attached to the dash the control arms and posts will be a great distance away and won't reach the holes in the body, guess it is trial and error and great deal of wrestling and fitting?
Thanks















