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Impreza WRX STI F4-2.5L DOHC Turbo
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Lighting and Horns
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Relays and Modules - Lighting and Horns
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Horn Relay
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Testing and Inspection
Horn Relay: Testing and Inspection
HORN RELAY
INSPECTION
Measure the
horn relay
resistance between terminals (indicated in table) when connecting the terminal No. 4 to battery positive terminal and terminal No. 3 to battery ground cable.