Start off by contacting Remington. They are good about keeping parts available for their products. If that fails, go to Gunpartscorp.com. Their selection is impressive. Jack First is another contact. There are sometimes parts available from eBay and auctionarms.com.
Find a good metal shop and provide them them the dimensions.
Try the auction sites
At the base of the brake pedal you will see the brake light switch. When you find the switch you will notice that it is held onto the rod by retainer clip which can be quite difficult to remove without damaging the clip. Once you get the clip off you can undo the electrical connector and the switch should slide off. Then you can slide the new one on, connect the electrical connector, and re-install the retainer clip.
Get a replacement 'retainer clip' from your dealership for under $3. You might find the pieces of the old one in the bottom of your door. It will clip onto that rod, then snap into the hole on the latch.
The winder fits onto a splined shaft, with a groove cut into it near the end. The winder handle has a spring clip, like an external circlip, which protrudes into the door card. The handle is simply pushed onto the shaft until the spring clip drops into the groove. To get it off, you need to find a way of pushing the spring clip off the winder handle. Try depressing the door card around the winder and look in to see if you can push the spring clip off, from around the handle shaft, using a screwdriver.
Try this link, they seem to have about every caliber magazine for the 788. Copy and paste. http://www.jocoemprise.com/rifles/remington/remington788.html
It is important to have ammunition if one is going to own a weapon. Many Magazine clips can be bought at the manufacturing stores, or found in stores online.
Find an authorized Remington Repair center. You can find a list on Remington's web site.
First of all you start with some nik l nip wax bottles then run it under some hot water then shape it into you mouth and your done a clear retainer but remember to suck out all the juice frome it by removing the lid xxxx
You can find Remington Date of Manufacture codes at www.rimfirecentral.com in Remington Forum
You will have to contact Remington to find out.
I can find no reference to a Model 1194 Remington.