The Stovebolt Site Forums The Shop Area The Electrical Bay Parking lights vs. turn signals '48 3100?

On a 49 3100, are the front parking lights the same as turn signals? My truck has neither.

On an original truck they will be parking lights. Unless a previous owner has added a turn signal kit they did not originally come with your truck. Those kits back in the day usually included or were used with something like this.
https://www.flickr.com/photos/advance-design_parts_co/8130552846/in/album-72157631870734114/
There was a wide variety of aftermarket versions available and accessory Guide models that could be used. I chose to eliminate these and bought sockets for my original parking lamps to convert them to turn signals.
http://www.classicparts.com/1947-59-Double-Contact-Conversion-Kit/productinfo/47%2D905/

I buy most of my 12v stuff from Del City wire. Been buying from them for years. Here is one similar but about half the price.
http://www.delcity.net/store/Bulb-Pigtail-Sockets/p_810384.h_810386.t_1

I made mine both. I put in yellow LEDs for turn and white LEDs for park.

Yep. How I added the dual contact socket for turn signals on my truck. Clear lens and yellow bulbs. 1157 lights and all was good.

I am installing the two contact lights from classic parts, does it matter which wire I use for parking or turn signal?

I could be wrong, but take a close look at the bulb. I think the filaments are different. One is thicker than the other one. If so, I think the thicker one is your turn signal.

The 1949 Chev truck wiring diagrams shows stop (white) and tail (black) and both 16 gauge wire.

http://chevy.oldcarmanualproject.com/electrical/wiring/index.htm

The bulb goes in one way.

Maybe someone know which filament is the larger/brighter?

On the rear, those two filaments served as parking/marker/driving and brake light. I forget which one was used for turn signal.

The brake and turn are the same filament.

That would depend on what type of signal switch is used.