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Bad Automotive Wiring Methods to Avoid - T-Taps, Wire Nuts, Romex Warning Sheet

Printed instruction sheet warning against bad wiring methods like wire nuts, T-taps, and twisted wires with labeled photo examples.

AI caption · Photo 828 of 2004

This document is a one-page illustrated warning sheet about improper automotive electrical wiring methods. It opens with the headline "ATTENTION! VERY IMPORTANT!" and instructs the reader to "DO NOT resort to any of these 'wiring' methods!" A grid of photographs illustrates each prohibited practice, with captions identifying: twisted together wires, wire nuts, mismatched connectors, T-taps, a wire jammed into a fuse, broken butt connectors, bare wires, electrical taping of bare wires (spelled "Eletrical" on the sheet), and a generic "This!" example showing a poorly made crimp splice. Two additional photos show a cheap crimping tool captioned "Cheapest Crimpers Available" and a length of household wire with the underlined warning "DO NOT USE ROMEX." The sheet contains no vehicle-specific information — no year, make, model, part numbers, fuse ratings, or wire color codes — so it applies generically to any automotive wiring work, including the uploader's 1985 Ford Bronco. A reader learns which shortcut splicing and connection techniques are considered unacceptable and unsafe for vehicle wiring, and that household Romex cable and bargain crimping tools should be avoided.

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Frequently asked questions

What wiring methods does this sheet say not to use?
It warns against twisted together wires, wire nuts, mismatched connectors, T-taps, wire jammed into a fuse, broken butt connectors, bare wires, electrical taping of bare wires, and poorly made crimp splices.
Can I use Romex household wire in my vehicle according to this document?
No. The sheet explicitly states, underlined, "DO NOT USE ROMEX."
Does this sheet allow using cheap crimping tools?
It shows a photo captioned "Cheapest Crimpers Available" among the discouraged items, implying bargain crimpers are part of the poor practices to avoid.
Is it OK to jam a wire into a fuse to tap power?
No. "Wire Jammed Into a Fuse" is pictured and listed as one of the wiring methods you should not resort to.

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