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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#1
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Repeat Offender & Resident Subaru Antagonist Group: Members Posts: 13,611 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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Spoke |
Nov 7 2014, 09:35 PM
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#2
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Jerry Group: Members Posts: 7,052 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None |
Use the negative side to switch the backup lights on and off.
It is usually safer to run 12V to the coil of the relay, then the negative of the coil to the switch on the trans. One way to look at it is if the contacts of the switch were to be accidentally grounded, you won't blow a fuse; the light will just turn on. If it were 12V, then a fuse would blow. |
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