Need help with wiring in a relay! I think the reason that my VH swap won't start is because I was missing an ignition coil relay. The Q45 uses an ignition coil relay, while an S13 doesn't. Also, I need to connect that to the ECCS relay somehow but I'm clueless on that. I'm trying to follow this tutorial but I'm pretty lost: http://freddit/r/240sx · Mar 2, 2014First of all, do you understand the basic concept behind a relay?1 votethe swirly lines are the activation coils for the relay or the low side. all you need to do is run a t splice from pin 16 of the ecm to the low side of a relay (30A) and splice into pin 45 1 voteSee allSee all comments Need help with wiring in a relay! • r/240sx - reddit 240SX. 200SX. 180SX. ADVICE (use this when looking for buying or part advice) So if we want to apply this concept to the diagram of the factory ignition coil relay, we can see that the lower left side of the relay is receiving battery power. That power travels through the coil to pin 16 of the ecu (the grey/red wire spoken about in the swap 1995 Nissan 240sx Ecu Wiring Diagram - workingtools Relay wire diagram 240sx ecu wiring diagram database. Description: 1995 240sx fuse diagram wiring diagram database horn relay diagram relay wire diagram 240sx ecu, dimension: 2142 x 2348 pixel, image type:  Nissan 240sx rack and pinion fresh 300zx ecu wiring diagram wiring.