Where was the original location for the rear veiw mirror on a "54" 3100, was it an option or a standard feature?
Thanks

Hy mperk, are you asking about the interior mirror, or the left or right exterior mirror?

The driver's (Left side) out-side mirror was standard.

The passenger's side (right ride) out-side mirror was optional/accessory. The inside rear-view mirror was optional/accessory (standard mirror and non-glare mirror).

(Later tonight, I'll find out if those mirrors were optional or accessory).

Tim according to the ’54 Truck Data book the only mirrors that were an option for the 3104 were R.P.O. 210H the L.H. long bracket, R.P.O.210J the R.H. long bracket and R.P.O. 210G the R.H. short fixed bracket. For the interior the parts book only lists The Glare-Proof Rearview Mirror accessory for ’54, gp.16.068 pn.986948.
If you have any more info I would like to see it also.
Denny Graham
Sandwich, IL

I am refering to the interior mirror I would like to know the mounting location for the mirror bracket.
Thanks

Here is an illustration of the non-glare mirror and bracket.

page 21 of the 1954 Truck Data Book (Oct 29 edition) - TRUCK ACCESSORIES - Mirror Bracket, Inside 1947-55 (All models)

It looks like the mirror bracket could be ordered separately from the non-glare mirror. The 1954 interior mirror-bracket being a different arm and a different non-glare mirror from the none glare mirrors used 47-50, and 53 (shown in the MPB). I do not know about 51-52 - they are not shown in the MPB, but a non-glare mirror is shown in the 1951 Truck Data Book.

I can't find any "standard" interior mirror listed in the Master Parts Book (or Truck Data Books) for 47-54.

Does that mean that I have to put a non-glare mirror inside my trucks, if I want to be "correct"?

Regarding the installation of the 54/55 interior mirror arm, here is an earlier post with some photos.