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Car Electrics: If there is a PD of +12V, shouldn't it trigger a relay
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<blockquote data-quote="tamrat" data-source="post: 459032" data-attributes="member: 29874"><p>Yes. I did this. I'm definitely sure I didn't mess up the wiring since I also tested this with the hazard switch. The hazard switch has 4 cables. All pins are at 0V except for one which is always +12V (with a multimeter: positive probe on the pins, negative probe on body ground). This +12V line also drops to 0V when the hazard switch is activated. Tried to get power from this cable, connected it to 86. Grounded 85. Nothing. Relay doesn't click. But the hazards come on. Its like the circuit was deprived of -12V (negative: body ground). And rather than flowing from 86 to 85, its like feeding -ve power from 85 to 86.</p><p></p><p>I have attached the diagram of the circuit I built below.</p><p></p><p>[ATTACH]9053[/ATTACH]</p><p></p><p>Additionally here is the official EWD from Toyota.</p><p></p><p>[ATTACH]9054[/ATTACH]</p></blockquote><p></p>
[QUOTE="tamrat, post: 459032, member: 29874"] Yes. I did this. I'm definitely sure I didn't mess up the wiring since I also tested this with the hazard switch. The hazard switch has 4 cables. All pins are at 0V except for one which is always +12V (with a multimeter: positive probe on the pins, negative probe on body ground). This +12V line also drops to 0V when the hazard switch is activated. Tried to get power from this cable, connected it to 86. Grounded 85. Nothing. Relay doesn't click. But the hazards come on. Its like the circuit was deprived of -12V (negative: body ground). And rather than flowing from 86 to 85, its like feeding -ve power from 85 to 86. I have attached the diagram of the circuit I built below. [ATTACH]9053._xfImport[/ATTACH] Additionally here is the official EWD from Toyota. [ATTACH]9054._xfImport[/ATTACH] [/QUOTE]
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Car Electrics: If there is a PD of +12V, shouldn't it trigger a relay
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