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WIPERS TWO SPEED With Relays, Installed #2 -- ET-219B
MGA Two Speed Wiper Motor Conversion - by John Casey



Used:
  • Lucas W14 Wiper Motor with MGB Flex Drive and Tubes (EBay $49.00)

    New:
  • 90 degree gearwheel, rubber mount and mounting strap (www.s-v-c.co.uk $33.00)
  • Headlight Switch (Moss Motors $36.99)
  • Lucas Two-Speed wiper motor plug (www.britishwiring.com $4.00)
  • Two 12 Volt DC 40 Amp Five-Blade Micro-Relays with sockets (Amazon $8.30)
  • Six #10 (¾” long hex-head) sheet metal screws for mounting plate;
  • Two 1/4” (¾” long) bolts with nylon lock nuts for motor mount strap;
  • Two 1/8” (½” long) bolts with nylon lock nuts for relays;
  • Sixteen metal flat washers;
  • Sixteen rubber flat washers
    - all washers should fit ¼” bolt ($9.89)
  • One 6” x 18” (16 Gauge) steel sheet (Home Depot $7.15)

    Cost (not including shipping): $148.33

    Suggested reading for an intro into what’s involved:

  • Barney Gaylord’s MGA Tech Pages
    “TWO SPEED WIPERS With Relays” at:
    http://mgaguru.com/mgtech/electric/et219.htm
    and “TWO SPEED WIPERS With Relays, Installed” at:
    http://mgaguru.com/mgtech/electric/et219a.htm
  • Colin Firth’s “CONVERTING THE MGA WIPERS TO 2-SPEED” at:
    https://www.mgcc.co.uk/mga-register/wp-content/uploads/sites/22/2013/12/Safety-Fast-2-speed-wiper-article-updated-version-dec-13.pdf - (0.6-MB pdf file)



  • MGA Two Speed Wiper Motor Mounting Plate Dimensions












    On 7/18/2021, John Casey wrote:
    Wanted to provide an update to my mounting plate schematic. There was an error in the hole size for mounting the plate (correct is 1/8" vice 1/4") and I removed the cutouts for accessing bolts on the back since using #10 sheet metal screws has proved successful for many years of operation.

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