1989 F150 DASH PANEL

Hi, A buddies F150 has several gauges in his dash panel that are intermittantly giving incorrect readings. Since more than one gauge is affected we suspect
a bad ground or defective foil pattern on the lex cicuit board. does any one have or know a source for the gauge schematic and/or printed circuit layout for this year. Our books show for earlier models but nothing for this year. Thanks, Tom
-- Western Video&Appliance Repair 128 Village St. Johnstown, Pa 15902 snipped-for-privacy@arczip.com
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I don't know what "defective foil pattern on the lex cicuit board" is, but if several gauges are wacky at the same time, I would suspect a voltage problem with the charging system, or a bad gauge voltage regulator (located on the printer circuit board. You could be on the right track with bad ground; sometimes the wiring connector at the circuit board is loose.

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