Jump to content
© 2012 by Todd W. White

SM420 Shifter And Backup Switch Installed

Todd W. White

By Todd W. White

 Share

Here's the SM420 Shifter and Backup Switch installed. Clever way for the GM engineers to adapt the old SM420 for the then-new federal regulations that all vehicles had to have backup lights from the factory, starting in 1966.

Copyright

© 2012 by Todd W. White

From the album:

New Engine for Mack, Jr.

· 40 images
  • 40 images
  • 0 comments
  • 7 image comments

Photo Information

View all photo EXIF information
 Share

Recommended Comments

Dmatt2469

Dmatt2469 0

Posted

Fellow enthusiasts-

where can I buy a replacement backup switch ?

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Add a comment...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×

BigMackTrucks.com

BigMackTrucks.com is a support forum for antique, classic and modern Mack Trucks! The forum is owned and maintained by Watt's Truck Center, Inc. an independent, full service Mack dealer. The forums are not affiliated with Mack Trucks, Inc.

Our Vendors and Advertisers

Thank you for your support!

Mack Related Links

Popular links

BMT Forum Logo

HTML tutorial
×
×
  • Create New...