Blazer/Jimmy stock radio

[71jimmy]

Just installed a stock AM radio and the stock under dash speaker into my '71 Jimmy. Looks good works great.

On the rear of the radio is a small L bracket meant to connect a strain relief going to the firewall or under dash or somewhere. The Jimmy did not have a radio installed so I don't know where to connect the strain relief. I found info on were it would go if you had the in dash speaker ie. trucks and some blazers/jimmys but not with the under dash speaker. I do not have the under dash speaker cutouts.

Does anyone have info on where this strain relief is connected stock????? A pic would be great if possible.

On a side note, my SPID does not show a radio option. Does this mean it never came factory with a radio? Or is this hit or miss on whether they noted it on the SPID? Would the factory have noted on the SPID a radio delete option?

Thanks