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I picked up one of Jeep Headlight Delays. It's labeled 56000363 and is made in the USA, I was told it was out of a 1990. I plugged it in and cannot get it to function. The fuse is good. I turned the key to on, and turned headlights on. Let it sit for 3 minutes, then turned key off, waited 10 seconds then turned headlight switch off and the lights turned off immediately. Any Ideas? I have since pulled the relay and have it set up on a bench with a 12v battery and a single light bulb as headlight. My wiring to the battery mirrors that of the truck and I cannot get it to keep the light bulb on following the same switching procedure. I am trying to bench test because I broke my collar bone a few weeks ago and I'm not able to twist to actually test the truck side plug as described in the manual. Is there another way to test this relay? Will the relay still delay the headlights if they've been upgraded to the relay loom?(possible current draw requirement?) Picture of unit I'm referring too: (photo posted by hornbrod) Wiring Diagram I'm following: (also Hornbrod)