aem smart coil wiring
 

hi i need help wiring up the relay to make the harness for aem smart coils. i have done everything correct but having trouble wiring the relay. can someone tell me which wire goes where on the relay. ive been using this diagram just need to know which wire goes to which terminal 87, 85, 30, 86 on the relay

Your diagram shows NO (normally opened) contacts so that would be 30 to 87
And the coil would be 86 and 85

please correct me if i am wrong but will the wiring go something like this?

Ok from that diagram I see that it won't work.

You have to have +12v to trigger the coil of the relay.
From your diagram the relay coil is in series with the D terminal or your ingnition coils which go to the negative terminal of the battery
This won't work as one side of the coil needs 12v and the other side needs ground.
It looks like A is +12 signal from the ecu and B/C are grounded and D is negative feedback to the ecu.
If D is indeed a 12v then from the ignitor harness it goes to 85 and 86 goes to the negative battery terminal or a ground source.


Now as for your relay contacts if that diagram is correct 30 is a 12v wire from the battery and 87 goes to the E terminal on the ign coils

If you really get stuck then Contact: C Ludwig here on Forum or at his website www.lms-efi.com
He is a AEM and Haltech eficiando and can help you to wire the coils up.
He sold me my Haltech and he makes GREAT harnesses for the both the Haltechs and the AEM Smart coils.
Just tell him what you need and he can do it!