Electrical Question #15 Need Help Please, I'm totally stumped this time |
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Electrical Question #15 Need Help Please, I'm totally stumped this time |
76-914 |
Apr 6 2014, 06:33 PM
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#41
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Repeat Offender & Resident Subaru Antagonist Group: Members Posts: 13,509 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California |
I'm going to have several electrical questions. 1st, Is pin #8, on the 14 pin plug at the relay board, the only switched 12v+ source in the engine compartment? TIA, Kent
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76-914 |
Jul 5 2015, 09:36 PM
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#42
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Repeat Offender & Resident Subaru Antagonist Group: Members Posts: 13,509 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California |
I wanted an "in use" indicator light in the cockpit for the radiator fans. The fans are negatively switched and their ground wires pass thru the tunnel back to the ECU. I wondered if (IMG:style_emoticons/default/confused24.gif) I could cut in a small lamp in that ground circuit so rather than ask I thought I would try to figure it out. I used a 12v halogen flood lamp for load, a 12v test light and 12v Batt. Pos+ to the flood lamp+ / flood lamp - to test light / test light to Batt -. And yes the test lamp did light but the flood lamp did nothing; nada! (IMG:style_emoticons/default/confused24.gif) Thinking it might be location along the path I flipped them. Batt+ to test light / test light to flood lamp + / flood lamp- to Batt -. Same result. So now I wonder if this it is a demand or load thing? What is happening? Why won't the flood lamp work with the small test lamp in line? Doesn't it complete the circuit?? And what is the best way to wire in an "in use" indicator lamp? TIA, Kent
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