I just signed into this site but have been visiting it for a few months now. It has been a very useful site. I'm trying to build a Marine Corp M1 with plow. I have two questions.
1. Is the infantry phone just a square box on the back.
2. What does the right vision block look like with conduit controls going
into it.
I haven't been able to find any better close shots of them. Any photos or descriptions would be helpful. I would like to post pictures of my build once I get a better descriptions of these two parts.

The T/I Phone is just a box, with a hinged cover, on the right rear.
The samaller box above it is a new feature on Army AIM tanks. It is a rear slave cable receptacle.

The right vision block is replaced with a flat plate that has a connector for the cable centered on it.

However, if for some reason you don't have your vision block coupler device that White4 posted, you'll see the vision block removed and the cable run through the empty hole.

Jed