Headlights for Diamond T

[motto]

As Darrin says, the CCKW and US6 headlights are different in the rim or door as the Americans refer to it. The Corcoran Brown light used on the Stude has a rim that is flatter than the Guide that is used on the GM and it is a complete circle. The rim used on the Guide is split and uses a clamping screw. The light assemblies will interchange as the mounting is similar.

Something you should be aware of if swapping lights between vehicle types is that some 7" headlights appear to be very similar to the CCKW/US6 headlights but have a reversed mounting arrangement. Instead of the ball/convex on the truck and the cup/concave on the light they have the ball on the light and the cup on the truck. I don't recall the Diamond T but I think the Mack may be the reverse mounting to CCKW/US6.

David