Car will not turn over

[Wuhzha]

Hello, i am currently building a ka24det in a 1989 240sx s13. I have done a battery relocation with an inline fuse to the front by the engine bay fuse box. Currently have a wiring specialties pro wiring harness with an AEM ems4 standalone ecu. Most of the wiring harness has been installed except for a few plugs i am stuck with and do not know what to do with. The car has power to some things, but isnt giving any power to the engine. When i put the key in the start position, i can hear the ecu relay clicking. But when I turn the key in the start position nothing happens. I am not getting anything when trying to turn the car over. Trying to get this car on the road and could use a little guidance by some true professionals. Thanks

[coconutking123]

Sounds like you're missing some grounds I had the same issue when swapping my SR20. There should be a ground on the back of the head, also on a stock manifold there are grounds on that as well that go to chassis ground. An easy way to test is get some jumper cables and attach one end somewhere solid on the block and attach the other to a solid ground on the chassis like bolts for ur coilovers on the strut tower. If this gets it to crank over you gotta add some more grounds.