Side marker lights
#2
I e seen some on eBay for cheap. Also, have you thought about just spraying over them with taillight spray tint? It's only around $7 and you can make them as dark as possible.
#3
JK Enthusiast
eBay, for sure. Got mine for about 40 bucks and they look OEM. They included the housings that just snapped in and the bulb. Plug and play, no wire splicing or anything like that. If you spray them with the rattle can tint, they always haze up after a while unless you pay a paint shop to do it with whatever paint they use.
#5
GenRight and Morris 4x4 center have good ones too:
GenRight Jeep LED Stealth Marker & Blinker Lights | 4wheelonline.com
Jeep Lighting Parts | Wrangler JK Jeep Parts | Morris 4x4 Center
GenRight Jeep LED Stealth Marker & Blinker Lights | 4wheelonline.com
Jeep Lighting Parts | Wrangler JK Jeep Parts | Morris 4x4 Center