Expert Answers about Excalibur

• Only 2 Diodes Light Up on 10 Diode LED Lights
• Checking all of the grounds like you have already done is the first step, including the main ground on the trailer and the vehicle's trailer connector ground. It is a good idea to check all of the trailer wiring for any damaged or frayed wiring because there may be a short in the wiring. I would ground the taillights to a trailer battery and touch the wires to the positive post to see if each light illuminates properly. You also want to make sure the connector on the trailer side and vehicle...
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