Boot & Wire Protection | DEI Powersports Boot & Wire Protection. BOOTS AND WIRE PROTECTION. DEI offers a comprehensive selection of heat resistant sleeving to cover all of your electrical needs. Don’t let your wiring cook! Hot cylinder heads and exhaust systems can turn wiring harnesses into brittle. Protect-A-Wire is great for covering ignition wires, or adding an extra layer of Wire Cover Boot | AutoPartsWarehouse Wire Cover Boot Products. You should regularly check your ignition wire cover boot to make sure it's not showing any signs of damage. An old and worn-out boot can short-circuit, giving you tons of problems and headaches on the road.