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Jeep Wrangler YJ
YJ General Discussion
Identifying plugs in engine bay, passenger-side
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<blockquote data-quote="machoheadgames" data-source="post: 428137" data-attributes="member: 18789"><p>No problem, very common questions as most people aren’t accustomed to buying vehicles and finding random unused plugs all over the place.</p><p></p><p>As for the 4x4 light, it’ll help to figure out how that system is working currently before digging into the light. From the factory is the vacuum system. When the vacuum fork is slid over in 4WD, it pushes a button on a small continuity switch. The light’s ground goes out to the switch, other wire carries the light’s ground actually to ground. That harness being unplugged makes me think the previous owner may have swapped you away from the vacuum setup. That doesn’t mean you can’t make the light work, but you’d need to snip that plug off and rewire some wiring down to the transfer case and buy a transfer case switch if so.</p><p></p><p>Some pics of your front axle from behind would help to figure out if you still have the vacuum setup or not, and go from there.</p></blockquote><p></p>
[QUOTE="machoheadgames, post: 428137, member: 18789"] No problem, very common questions as most people aren’t accustomed to buying vehicles and finding random unused plugs all over the place. As for the 4x4 light, it’ll help to figure out how that system is working currently before digging into the light. From the factory is the vacuum system. When the vacuum fork is slid over in 4WD, it pushes a button on a small continuity switch. The light’s ground goes out to the switch, other wire carries the light’s ground actually to ground. That harness being unplugged makes me think the previous owner may have swapped you away from the vacuum setup. That doesn’t mean you can’t make the light work, but you’d need to snip that plug off and rewire some wiring down to the transfer case and buy a transfer case switch if so. Some pics of your front axle from behind would help to figure out if you still have the vacuum setup or not, and go from there. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
Identifying plugs in engine bay, passenger-side
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