I'm almost done with my engine swap and have a few wiring questions that have me stumped. I have a 93 5.0 Mustang motor and harness.
Part I - Grounds
According to some other threads, I need a ground from the intake manifold to the body (firewall) and another ground from the block to the frame. Is this correct? I am confused about the ground from the battery. Where does the ground go from the battery? There is a big wire and a small wire. It looks like the small wire goes to the body and grounds the computer. Is it necessary to grind away any paint to get to bare metal?
Part II - Relay & Fuses
Ryan's website lists the use of 4 relays: 1. EEC, 2. MA/O2, 3. Ignition, 4. Fuel Pump. First of all, I can't find anything that tells me what amp fuses to use with each relay in the new fuse block. So if someone can tell me what amp fuses they are using for each relay, that would be great. Secondly, according to Ford there are only 3 relays that was used in the Mustang harness: EEC, Fuel Pump, and A/C. Do I really need the MA/O2 and Ignition Relays?
Part III - Starter/Alternator/Relay & Solenoid/Coil Setup
I need help putting all these components together. I have both the Bronco's solenoid and the Mustang's solenoid. I am currently trying to use the Mustang one but if need to use the Bronco's - that's fine. The Mustang has two larger posts on the top and a single smaller one. I understand that the starter goes on one side and the alternator and + cable to battery goes on the other. Does it matter which side? And that is as far as I have gotten. Does the hot wire (light green and red) to the alternator go the ignition relay or straight to the ignition switch? Does it need a fuse? What do I do with the brown and red/green wire going into the Bronco's solenoid?
Hopefully, this is it and I'll be ready to crank her up!
Part I - Grounds
According to some other threads, I need a ground from the intake manifold to the body (firewall) and another ground from the block to the frame. Is this correct? I am confused about the ground from the battery. Where does the ground go from the battery? There is a big wire and a small wire. It looks like the small wire goes to the body and grounds the computer. Is it necessary to grind away any paint to get to bare metal?
Part II - Relay & Fuses
Ryan's website lists the use of 4 relays: 1. EEC, 2. MA/O2, 3. Ignition, 4. Fuel Pump. First of all, I can't find anything that tells me what amp fuses to use with each relay in the new fuse block. So if someone can tell me what amp fuses they are using for each relay, that would be great. Secondly, according to Ford there are only 3 relays that was used in the Mustang harness: EEC, Fuel Pump, and A/C. Do I really need the MA/O2 and Ignition Relays?
Part III - Starter/Alternator/Relay & Solenoid/Coil Setup
I need help putting all these components together. I have both the Bronco's solenoid and the Mustang's solenoid. I am currently trying to use the Mustang one but if need to use the Bronco's - that's fine. The Mustang has two larger posts on the top and a single smaller one. I understand that the starter goes on one side and the alternator and + cable to battery goes on the other. Does it matter which side? And that is as far as I have gotten. Does the hot wire (light green and red) to the alternator go the ignition relay or straight to the ignition switch? Does it need a fuse? What do I do with the brown and red/green wire going into the Bronco's solenoid?
Hopefully, this is it and I'll be ready to crank her up!