1998 Ford F-150 4.2

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roscojoel

Member - Posts: 2

Joined: September 02, 2019

Location: Georgia, United States

Posted: September 03, 2019 at 4:16 AM / IP Logged

Need electrical schematic to troubleshoot an annoying short that’s draining my battery

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i am an idiot

Platinum - Posts: 13,671

This member consistently provides reliable information

Joined: September 21, 2006

Location: Louisiana, United States

Posted: September 03, 2019 at 4:28 PM / IP Logged

have you determined which fuse the drain is associated with? Do you have an DMM with a 10 amp setting? Is there an aftermarket alarm on it equipped with starter kill?

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roscojoel

Member - Posts: 2

Joined: September 02, 2019

Location: Georgia, United States

Posted: September 03, 2019 at 6:57 PM / IP Logged

Multiple shorts, beginning to look like gem (bcm) module

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Ween

Platinum - Posts: 1,366

Joined: August 01, 2004

Location: Illinois, United States

Posted: September 03, 2019 at 10:18 PM / IP Logged

The GEM is known to have issues. The windshield leaks, the GEM gets moisture in them. Strange operation occurs. Actually F150's, Expedition's, Navigator's all have the same issues.

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