rb92673
racecar
- Joined
- Jan 17, 2017
- Location
- San Clemente
I want to remove the factory fuse box in my dedicated Lemons race car. I think I have it all figured out except for the last relay I have, the Fuel Injection Relay. Car is 85 740T LH2.2. All wiring not essential to the running of the car in a race has been stripped out. Charge overpressure switch was missing on my car and is just jumpered.
I am fine with the fuel pumps running all the time, I understand that the relay is supposed to stop the fuel when the engine is turned off. I have the wiring diagram, but I don't fully understand it.
This is what I understand:
12v+ Power goes in through 30.
During running, 12v+ power goes out 87/2 to the fuel pumps and injectors.
This is what I think I understand:
When running 12v+ power goes through 87/1 to pin 9 on LH2.2
When not running 12v+ power goes through 85 to pin 9 on LH2.2
So I should be able to provide 12v+ power to:
Green and Pink wires coming out of 87/2 for fuel pumps and injectors.
Blue-Yellow wire going to Pin 9 on LH2.2
What I don't know what to do with is the red wire going from 86/1 to pin 21 on LH2.2 or,
yellow-black wire through the overboost to 17 on LH 2.2. Are these needed to be connected to the LH2.2 anymore if I direct wire as above?
Thanks for your help. I searched for about an hour and could not figure it out.
I am fine with the fuel pumps running all the time, I understand that the relay is supposed to stop the fuel when the engine is turned off. I have the wiring diagram, but I don't fully understand it.
This is what I understand:
12v+ Power goes in through 30.
During running, 12v+ power goes out 87/2 to the fuel pumps and injectors.
This is what I think I understand:
When running 12v+ power goes through 87/1 to pin 9 on LH2.2
When not running 12v+ power goes through 85 to pin 9 on LH2.2
So I should be able to provide 12v+ power to:
Green and Pink wires coming out of 87/2 for fuel pumps and injectors.
Blue-Yellow wire going to Pin 9 on LH2.2
What I don't know what to do with is the red wire going from 86/1 to pin 21 on LH2.2 or,
yellow-black wire through the overboost to 17 on LH 2.2. Are these needed to be connected to the LH2.2 anymore if I direct wire as above?
Thanks for your help. I searched for about an hour and could not figure it out.