In the old days you could tell which side of a car the gas cap was on (most of the time), by where the exhaust was. Gas was on the opposite side.
Gas cap light on dash board | Jeep Wrangler Forums (JL / JLU) -- Rubicon, 4xe, 392, Sahara, Sport - JLwranglerforums.com
![Check fuel cap - the check fuel cap light came on what does that mean I've checked cap and gave it a good good turns its on there but seems like the Check fuel cap - the check fuel cap light came on what does that mean I've checked cap and gave it a good good turns its on there but seems like the](https://preview.redd.it/pw5425ibj6x71.jpg?auto=webp&s=f54a8c4e493fecfb8c31cb3e638dffc5324a6618)