matt_spitfire Posted January 1, 2017 Share Posted January 1, 2017 Hey team, I'm just finishing up the wiring on a 4agze. Ive got one of the easy wire looms. It basically goes like this.. 4agze loom 5 wires, 3 of them I need to hook up to my factory ignition switch which has four wires so should be pretty straight forward 1. Blk/red wire on factory ignition switch has constant power with ignition on and off and doesn't lose power when starter cranks - I've hooked this up to yellow constant wire on 4agze loom with 5a inline fuse. 2. Blk/white wire on factory ignition switch Has 12v when ignition starter cranks. 3. Blk/yellow on factory ignition switch Has 12v when ignition is on in acc's position and drops to about 9v when starter cranks. 4. Blu/red on factory ignition switch Has 12v with ignition on and drops to 0v when starter cranks. and finally we arrive to my question, there is a small black wire on the 4agze loom which is the starter signal for the ecu I assume this is for the cold start injector.. Basically I'm just after confirmation which wire I should hook into on my factory ignition switch for it to get the right signal when the starter is cracking over? The two wires on the 4agze loom I havnt mentioned are for the alternator and fuel pumps so don't need any info on these. cheers! - matt Quote Link to comment Share on other sites More sharing options...
matt_spitfire Posted January 1, 2017 Author Share Posted January 1, 2017 Problem solved! Black and white wire was the answer, has 12v only when in the start position. Admin delete if required Quote Link to comment Share on other sites More sharing options...
h4nd Posted January 1, 2017 Share Posted January 1, 2017 Good job putting in the answer, now it's findable info. Quote Link to comment Share on other sites More sharing options...
Stu Posted January 5, 2017 Share Posted January 5, 2017 Its the STA pin. The engine will run without it but badly. It tells the ecu the engine is cranking and it holds the timing and applied a crank prime. 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.