Ok I'm almost done with my swap. Before I go into anything, Yes I checked the inertia switch and it works as designed.
-66 Mustang Coupe
-1993 5.0 Cobra Swap
-1993 T5
Also, let me say that I've read many 5.0 Fuel pump troubleshooting guides and I still am having a brain block on this. So please bare with me.
1. Fuel pump relay not sending 12v to Inertia Switch in trunk through the DK Green/Yellow wire. It actually shows 7 volts when not connected to the fuel pump but I realize that isn't necessarily relevant except to say that its not 12v. It also shows 7 volts without the relay plugged in so I'm thinking that is artifact from pin 19 on the EEC.
2. Fuel Pump runs when given 12v outside of the relay circuit. Also Engine runs when I do this.
3. Replaced Fuel Pump Relay with known good relay same behavior.
4. Pink Black Wire (Common on Relay 30) at Fuel Pump Relay has 12V at all times.
5. Red Wire (Relay Coil +V 86) at Fuel Pump Relay has 12v with key on.
6. LT Blue/Org Wire (Relay Coil -V 85) at Fuel Pump Relay has 12V with key on.
7. DK Green Yellow Wire (Relay N/O 87) at Fuel Pump Relay has ?7v?
For item # 6, I cant for the life of me figure out why the negative side of the relay coil is getting 12v in relation to chassis ground. but it does explain why it doesn't work. Hopefully someone here can provide another look at it.
-66 Mustang Coupe
-1993 5.0 Cobra Swap
-1993 T5
Also, let me say that I've read many 5.0 Fuel pump troubleshooting guides and I still am having a brain block on this. So please bare with me.
1. Fuel pump relay not sending 12v to Inertia Switch in trunk through the DK Green/Yellow wire. It actually shows 7 volts when not connected to the fuel pump but I realize that isn't necessarily relevant except to say that its not 12v. It also shows 7 volts without the relay plugged in so I'm thinking that is artifact from pin 19 on the EEC.
2. Fuel Pump runs when given 12v outside of the relay circuit. Also Engine runs when I do this.
3. Replaced Fuel Pump Relay with known good relay same behavior.
4. Pink Black Wire (Common on Relay 30) at Fuel Pump Relay has 12V at all times.
5. Red Wire (Relay Coil +V 86) at Fuel Pump Relay has 12v with key on.
6. LT Blue/Org Wire (Relay Coil -V 85) at Fuel Pump Relay has 12V with key on.
7. DK Green Yellow Wire (Relay N/O 87) at Fuel Pump Relay has ?7v?
For item # 6, I cant for the life of me figure out why the negative side of the relay coil is getting 12v in relation to chassis ground. but it does explain why it doesn't work. Hopefully someone here can provide another look at it.