- Joined
- Oct 14, 2004
- Messages
- 5,001
I added an oil pressure sensor to my setup a few weeks back and thought I would post it for others that may want it as well. It is not a necessary item as it offers nothing to the system other than a digital reading of your oil pressure. The handheld and the 3.5 LCD both have fields to show oil pressure and it allows everything to be seen in one spot. You can set limits to flag if it goes low or too high.
Oil Pressure uses the same transducer as fuel pressure, it's Holley part# 554-102. The sensor comes with the connector needed and prewired. I used a "T" at the block to keep my analog gauge sender and add the transducer. I've had the "T" there for over 10 years so don't let that worry you if you choose to go that way and keep both, it's fine. I ran the sender and a Holley pressure shutoff for my low pressure pump up until switching to Holley EFI. I no longer used the pressure shutoff so I put the transducer in it's place. There are 3 wires, Ground (Black with white stripe), Sensor +5V (Orange), and a Sensor wire (Purple). These are 22ga wires. I used some 16ga wire that I had rather than buy a new roll of wire. The ground wire and the +5V wire are already pinned at the ECU since the Fuel Pressure wiring is there from the factory (Oil pressure & fuel pressure share these 2 connections). The Ground is at Pin 18 and the +5V is at Pin 26 in the J1A connector. This connector is shown in Figure 9 on page 11 of the Terminator installation instructions. You will need to tie the ground wire and +5V wire into these wires which go to the plug for the fuel pressure transducer. I made this connection about 10 inches behind the fuel pressure transducer connector, just spliced them in. The purple wire will need to run all the way to the ECU and be added. This will be Pin 20 in the J1A connector. You will need a pin, that part number is 3-1447221-4, I purchased 5 of them from Newark - Element 14 for $2.55, took 2 days to get them shipped from Chicago to Ohio. You only need 1 but unless you have the proper crimper it's very easy to damage it. I damaged the first one so luckily I had extras. I used a small pair of needle nose to crimp. I has to be crimped and kept in the correct shape or it won't fit in the plug. The plug has a wide white tab, you push that tab to the side to release the pins. A-20 will have a plastic pin that will need to be removed. You will put the new pin with the wire attached back into that slot, pushed all the way in to where the narrow white tabs opposite the wide white tab can be pushed back to lock the pins back in place. If you use a larger wire, like I did, you will need to splice a short piece of 22ga to use with the pin, otherwise the wire won't fit in the plug. If you run 22GA all the way then that's not necessary. A lot of blabbing for something that isn't that difficult. Figure 82 on the last page of the Terminator installation instructions shows the pinout and wire colors that I mention.
Oil Pressure uses the same transducer as fuel pressure, it's Holley part# 554-102. The sensor comes with the connector needed and prewired. I used a "T" at the block to keep my analog gauge sender and add the transducer. I've had the "T" there for over 10 years so don't let that worry you if you choose to go that way and keep both, it's fine. I ran the sender and a Holley pressure shutoff for my low pressure pump up until switching to Holley EFI. I no longer used the pressure shutoff so I put the transducer in it's place. There are 3 wires, Ground (Black with white stripe), Sensor +5V (Orange), and a Sensor wire (Purple). These are 22ga wires. I used some 16ga wire that I had rather than buy a new roll of wire. The ground wire and the +5V wire are already pinned at the ECU since the Fuel Pressure wiring is there from the factory (Oil pressure & fuel pressure share these 2 connections). The Ground is at Pin 18 and the +5V is at Pin 26 in the J1A connector. This connector is shown in Figure 9 on page 11 of the Terminator installation instructions. You will need to tie the ground wire and +5V wire into these wires which go to the plug for the fuel pressure transducer. I made this connection about 10 inches behind the fuel pressure transducer connector, just spliced them in. The purple wire will need to run all the way to the ECU and be added. This will be Pin 20 in the J1A connector. You will need a pin, that part number is 3-1447221-4, I purchased 5 of them from Newark - Element 14 for $2.55, took 2 days to get them shipped from Chicago to Ohio. You only need 1 but unless you have the proper crimper it's very easy to damage it. I damaged the first one so luckily I had extras. I used a small pair of needle nose to crimp. I has to be crimped and kept in the correct shape or it won't fit in the plug. The plug has a wide white tab, you push that tab to the side to release the pins. A-20 will have a plastic pin that will need to be removed. You will put the new pin with the wire attached back into that slot, pushed all the way in to where the narrow white tabs opposite the wide white tab can be pushed back to lock the pins back in place. If you use a larger wire, like I did, you will need to splice a short piece of 22ga to use with the pin, otherwise the wire won't fit in the plug. If you run 22GA all the way then that's not necessary. A lot of blabbing for something that isn't that difficult. Figure 82 on the last page of the Terminator installation instructions shows the pinout and wire colors that I mention.
