The Radio is On But No Sound Cause 1: Broken Antenna If there’s power going to your MKS’s radio, and you’ve verified that the ground connection is good and it has power, the only way to get your car working is to repair or replace it. Any issue with the wiring harness will prevent power from getting to the radio system and cause the fuse to blow again. Use a multimeter to verify the voltage level is accurate. Verify that your car’s radio has a solid ground connection. If your MKS’s radio fuse checks out, it’s time to determine if there’s a problem with the wiring harness going to the radio system. If both sides light up, the fuse is fine. If it only lights up for one prong, the fuse has failed, and you’ll need to replace it. Next, turn the key to the accessory position, and touch the test light tip to both prongs. You can usually find one inside the door jam that will reach the fuse box. Start by finding a good ground source on your MKS to ground the test light to. Here’s how: Touch each of these prongs with a test light. This can be accomplished without even pulling a fuse. If the connecting filament is damaged, power can’t reach the head unit, and the fuse needs to be replaced.Ī better way to verify a fuse is functioning is to use a test light. First, you can visually inspect your MKS’s radio fuse. You should see a schematic printed on the door. Step 2: Once you access your car’s fuse box, you’ll need to locate the radio fuse. On most makes and models, it’s to the left of the driver’s seat (when you are behind the steering wheel). Step 1: You’ll need to your Lincoln MKS’s fuse box location.
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