There are three different situations where labelled custom cable makes sense.   1. A label would make cable installation significantly easier.   If you’re an OEM whose equipment requires complex installation with myriad electrical components, and you want to ensure simple and foolproof installation, then labelled cable probably makes sense for you. We build a lot of cables with multiple legs on them, and we use labels to make sure installers know what plugs in where. Think about whether you need legs of cables, individual cables or cable bunches labelled. This depends on the point in your assembly and installation process where the label would provide the most value. Sometimes labelling cable bundles instead of individual cables can save manufacturers lots of money while still delivering the intended value.   2. Your part designs undergo frequent revisions   If your product’s design changes frequently, labels help you make sure customers receive up-to-date parts and can help maintenance technicians identify and solve problems. We’d recommend tagging each cable with a part number and revision number, so that anyone who grabs the cable from a part bin knows what version they’re holding.   3. You are dual-sourcing your cable   If you are sourcing a custom cable from more than one vendor, labels can help you identify and react to problems in case of quality issues. A vendor ID and date of manufacture makes a huge difference in these cases.   If none of these three factors apply to you, labels probably aren’t worth the cost. A good rule of thumb is about $0.75 per label. Depending on your order volume and the amount of labels per part you’re considering, that cost can add up fast.