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malaga_red75 |
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'74 2.5L N/A Subie ![]() ![]() Group: Members Posts: 454 Joined: 5-March 06 From: Menlo Park, CA Member No.: 5,674 Region Association: None ![]() |
So I am using aftermarket relays for the fuel pump and the cooling fans on my subaru conversion, using the stock ECU. I have attached a picture of the relay diagram.
![]() So, there are two circuits, an 'inner' circuit and an 'outer' circuit. The outer circuit is only completed when the inner circuit's electromagnet is active. It is currently wired like this: The 'inner circuit' receives a signal from the fuel pump pin on the ECU which goes into terminal 86 on the relay. (and here is where i think it has been wired wrong), coming out of terminal 85 the wire goes into the ECU into a 12 volt power connection. This is for the 'inner' circuit which should ignite the electromagnet. --- I THINK THIS IS WRONG. ---Shouldn't the wire coming out of terminal 85 go to a ground? thus completing the inner circuit and cause the magnet to attract the arm to complete the 'outer' circuit. I hope that wasn't too confusing, let me know. Thanks a bunch! -Peter |
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Tom |
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#2
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Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 2,139 Joined: 21-August 05 From: Port Orchard, WA 98367 Member No.: 4,626 Region Association: None ![]() |
Busmech, you are correct. Unless the relay has a protection diode to discharge the build up of voltage when the field collapses, then is does not matter which contact is + or ground for the coil circuit. It is just an electromagnet.
Tom |
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