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Description
The Specialty Power Windows (SPW) Universal Dual Wiper Drive Kit is a cable-driven windshield wiper conversion system engineered for street rods, custom trucks, kit cars, and vehicles under construction where traditional bulky linkage arms cannot fit behind the cowl or dash. By mounting a high-torque 2-speed wiper motor remotely, it transfers rotary drive motion through a flexible spiral-wound drive cable routed inside aluminum tubing to two independent wiper transmission wheelboxes.
System Architecture & Engineering Highlights
Remote-Mount Motor Design: The commercial-duty, 300 in-lb stall torque motor mounts in any accessible, hidden location (such as firewall, trunk, or kick panel). Flexible drive tubing eliminates the clearance headaches of solid mechanical pivot linkage bars behind tight dashboards.
Adjustable Sweep Geometry: The internal drive mechanism features an adjustable eccentric that permits sweep angle adjustment from 90° to 160° in 10° increments, accommodating split windshields, curved glass, or flat roadster wind wings.
Standardized 1/2" Shafts / Splines: Output shafts accept standard aftermarket or OEM-style wiper arms fitting 1/2" fine-spline knurls or bare 1/2" diameter shafts.
Cut-to-Length Aluminum Tubing: Supplied with two 3-foot aluminum rigid guide tubes that can be bent gently and trimmed to link the motor to the primary transmission and bridge across to the secondary transmission.
Integrated Self-Park Control: Built-in self-park circuitry automatically returns both wiper blades to the bottom or side of the glass when turned off via standard 2-speed or intermittent switch configurations.
Electrical & Controls: (1) Wiring Harness, (1) 2-Speed Switch (Rotary Knob or Rocker, Standard or Intermittent Delay)
Documentation: Written Installation Manual and Instructional Video Guide
Installation & Routing Notes
Tubing Bends & Radii: When forming the aluminum guide tubing between the motor and wheelboxes, avoid sharp kinks or tight radius bends. Maintain a minimum bend radius of 4 to 6 inches to keep internal cable friction low and prevent binding.
Flaring & De-burring: De-burr the inside of the aluminum tubing after trimming to length. The ends must flare slightly with the supplied tool to seat securely against the transmission housings without pulling out during operation.
Cable Lubrication: Apply a light film of waterproof white lithium grease or synthetic cable lube to the spiral drive cable prior to feeding it through the aluminum tubes.
Best Suited for Vehicles Under Construction: Because precise positioning of the cowl holes, tubing routing, and under-dash bracket fabrication is required, install and cycle the system prior to final interior upholstery and dashboard assembly.
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Refund Policy
We offer a 30-day return policy, which means you have 30 days from the date you receive your item to request a return.
Eligibility for Returns
To be eligible for a return, your item must be:
In the same condition as received
Unworn or unused
With original tags attached
In its original packaging
You must also provide a receipt or proof of purchase.
How to Start a Return
To initiate a return, please contact us at jonathon@hotrodhardware.com. Once your return request is approved, you will be provided with the return address and, if applicable, an RMA (Return Merchandise Authorization) number.
Important: Items sent back without prior authorization will not be accepted.
If you have any questions regarding your return, feel free to contact us at the email above.
Damages and Issues
Please inspect your order upon delivery. If your item is defective, damaged, or if you received the wrong item, contact us immediately so we can evaluate the issue and resolve it promptly.
Exceptions / Non-Returnable Items
The following items are not eligible for return:
Custom or personalized products (including special orders)
Hazardous materials, flammable liquids, or gases
Sale items
Gift cards
If you are unsure whether your item qualifies, please contact us before initiating a return.
Exchanges
The fastest way to receive a replacement item is to return your original item (once approved) and place a new order separately.
Free Shipping Orders
Orders that qualified for free shipping are subject to deduction of the original outbound shipping cost if the item is returned.
Refunds
Once your return is received and inspected, we will notify you regarding the approval status of your refund.
If approved:
Refunds will be issued to your original payment method
Any applicable restocking fees will be deducted
Original shipping charges (if applicable) will be deducted
Return shipping costs (if arranged by Hot Rod Hardware) will be deducted
Please note:
Payment processing fees (including PayPal, Amazon Pay, or other merchant fees) are non-refundable
It may take additional time for your bank or credit card provider to process and post the refund
