“When I was 19, I was just looking for a job and landed at PI Research at the time,” he says. Gibson said that he grew to love wiring by happenstance. “That was a giant project, and it was just another guy and me. Gibson says he has started using Tefzel wire for high voltage applications outside of motorsport and he used it when he built all of the harnesses for the first Formula E electric cars launched in 2014. However, if you want to use the best, Tefzel is the product of choice for wiring specialists who build looms for a living. Some engine builders and racers also use TXL for race applications, but Gibson says the cost of Tefzel is not that much more. Overall the product outperforms standard and TXL wire. He also says if you’re making a harness for an ECU or a loom with a lot of wiring, the Tefzel wire is thinner and lighter. However, if there’s an over-voltage situation, the Tefzel will be better able to handle it.” The Tefzel wire is rated for 600 volts, but obviously, it’s carrying no more than 12 volts max on an Ind圜ar.
The Tefzel wire is rated at 150 Celsius, whereas TXL blue is 125 C. “The temperature rating is a little bit better for the Tefzel. “There’s a few differences between Tefzel and TXL,” he says. The Tefzel wire is chemical and heat resistant. Gibson says that Tefzel wiring is much better for racing applications than standard automotive wiring for a few reasons. Most OEs use a TXL wire constructed with copper wire strands and has a sheathing of cross-linked polyethylene (XLPE). Tefzel wire uses an Ethylene Tetrafluoroethylene (ETFE) sheathing with tin-plated copper leads. Gibson says that they use nothing but Tefzel wiring for all of their harnesses. The wires must also be high-quality to withstand the constant plugging and unplugging. On motorsports applications where an engine may be changed a couple of times per race weekend, the harness has to be durable and flexible enough to withstand vibrations as well as having specialized connectors such as Autosports to make quick couplings. One of the things with OE wiring harnesses is that the manufacturers design them on a budget to make them cost-effective, and they are not designed to be cycled very much. Of course, if an engine builder is not up for making a loom, Indy Wiring Service is more than capable of building one to spec. We recently caught up with Gibson to discuss wiring looms and what engine builders need to make a better harness for their customers. In recent years, Gibson has branched out to work with some OEMs and industrial clients where they will use products such as Deutsch DTM/DT/DTP/DRC, TE HDP, AMPSEAL, and MOLEX MX23. The bulk of Indy Wiring’s business caters to the racing market using Mil-spec and aviation-grade products such as DR25 heat shrink, Spec 55A wire, Raychem molded heat shrink boots, Deutsch Autosport connectors, and a selection of OEM mating connectors. He has worked for Pi Research, Cosworth, and now works directly with Ind圜ar for their wiring loom needs. Jeremy Gibson of Indy Wiring Services (), based outside of Indianapolis, has been in the wiring business since 2001.
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