I have a Cozy Cab mounted on a 1025R. When blowing snow, I find the wiper switch, mounted in the wiper motor enclosure, is not very handy. Moreover, most of the time a short wipe sequence would be preferred, to clear snow blown back on the windshield, rather than having the wiper motor run continuously. As such, I decided to research incorporating the intermittent wipe feature.
While this thread is specific to the Cozy Cab supplied wiper motor, it can be readily adapted to other cabs and wiper motors.
My first thoughts were to construct a timer circuit. While designing the circuit to accomplish that is easy enough, constructing the circuitry to withstand the vibration/environment, mounting the circuit board, controls for the delay interval, etc are all issues that can get involved. Next, I considered utilizing a pre-built timer module. Again, mounting this where the control panel would be accessible had its issues not to mention it wouldn't be convenient to adjust the delay, especially while blowing snow.
So rather than re-invent the wheel, I decided to utilize an off-the-shelf wiper intermittent delay controller/switch. I selected a Cole Hersee unit (Cole Hersee was acquired by Littelfuse a few years ago.) They are commonly found in school buses, custom cab industrial vehicles, and step vans. I had previous experience with these controls as we utilize step vans for our business service vehicles.
This unit more than fulfilled my expectations. The initial goal was just to add the intermittent wipe feature. Additionally, the Cole Hersee unit also supports the "wash" function. While I don't have a washer system nor do I see the need, when simply pushing in on the control knob for the wash function, it also cycles the wiper two or three times, doubling as a mist function. I find this is the function I utilize the most.
Cole Hersee manufactures several different models. They are pretty much the same, with the difference being the type of wiring connector and/or the number of wiper motors they'll control. I've attached the engineering drawing which details the differences as well dimensions, wiring color codes, connector pin outs, etc.
I removed the wiring from the existing wiper housing switch. I left the switch in place to fill the hole. I routed new wiring from the wiper motor to the Cole Hersee wiper switch mounting location in the overhead console. Four wires are required: ground, low speed, high speed, and park. #18 awg wire is more than adequate, as the wiper motor was fused for 7.5 amps. The wiper motor in the Cozy Cab had 1/4 male flag terminals for all but the ground connection. These accept the generic 1/4" female flag terminals, such as the red or blue insulated crimp terminals. The ground wire connects to a wiper motor cover screw. You'll want to identify the functions of each terminal with a jumper wire connected to +12V.
In the overhead console, I installed a Molex disconnect plug on the four wires from the wiper motor to provide a means to disconnect the motor easily for service.
The best price I could find on the Cole Hersee controller was $66.72 from an Amazon third party seller, Crimp Supply: https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
This is a dual wiper motor controller. I just utilized the functions for wiper motor #1. Overkill, yes. However, it was less money than the single motor controllers/switches.
I decided to retain the connector that was part of the switch as it would simplify replacement if never need be. I sourced the mating connector shell and contacts from "Terminals & Connectors":
I utilized the original wiper motor power and ground wiring to supply the Cole Hersee unit.