Saginaw? Tranny question

[Chevy nutcase]

Guy I bought my 66 c10 from said this was a Saginaw 4 spd. I looked a bit for something like it but all the images that come up when searched show shift levers and linkage on the driver side. I need to get my reverse lights for Pennsylvania to say it's ok to drive and I'm having trouble locating where or if this thing has a reverse shift indicator switch. I really dont want to put the backup lights on a toggle. I'm pretty good identifying engines and auto transmissions, but manual gearboxes are Greek to me.