Quad Ascender tail lights?

[rizzo20]

I wired up Ascender tails on my Envoy using the attached pic (unknown author) I found floating around. This setup makes the top light (red LED 3157 bulb) on the fixture work as a parking light & brake light. The middle light becomes the turn signal ( red LED 3157 bulb) and I don't have the bottom bulb wired into my reverse lights yet.

What I want in the end is the top two bulbs to work as parking/brake/ turn signals. Is that possible? I think I have the correct bulbs installed to make that happen but I have no idea how to change the wiring to accomplish it. Also, I noticed the middle bulb socket only has 3 wires and 3 pins but the top socket has four wires and 4 pins. I'm thinking I need to change the middle socket to the same type as the top to pull this off, correct?

 

[Sparky]

Well here's the issue, this platform has the turn signal separate from the brake light, so you'll have to use something to combine the separate signal and brake wires to a combined brake/signal. Then you'd just wire the top two sockets identically. You would need another socket like the top one to make it work, although, it is odd the top is a 4 wire socket instead of 3. (Usually with 3157 bulbs you have a parking light, brake and/or turn light, and ground).

One way to accomplish this is a trailer adapter to combine the signals. Not sure if there is another way to do it on this platform or not.

Funny thing is, my Silverado has combined brake/turn signals and I want to split them out lol.