cola72
New Member
- Joined
- Jun 28, 2020
- Messages
- 4
- Reaction score
- 0
- Points
- 1
- Location
- Utah
- Vehicle Year
- 1989
- Make / Model
- Bronco II
- Transmission
- Automatic
Hey all, I'm fighting and electrical issue on my 89 B2 (2.9)
So I have a parasitic power draw on my battery ~300 mA. 150 of this was coming from the aftermarket stereo, which I am going to replace. However the remaining 150 mA appears to be coming from the EEC-IV. After pulling fuses I ended up at the EEC relay. When I pulled the relay the power draw remained, so I believe the relay is good. After looking at some wiring diagrams I saw that this relay provides power to the EEC-IV via a yellow/black wire. I disconnected this wire at the relay and BOOM, power draw disappeared.
Couple questions:
1) is 150mA typical ignition off power draw for an EEC-IV relay?
2) If not, how would I go about troubleshooting the exact source of the power draw.
(Draw test performed with multi-meter in series to battery
So I have a parasitic power draw on my battery ~300 mA. 150 of this was coming from the aftermarket stereo, which I am going to replace. However the remaining 150 mA appears to be coming from the EEC-IV. After pulling fuses I ended up at the EEC relay. When I pulled the relay the power draw remained, so I believe the relay is good. After looking at some wiring diagrams I saw that this relay provides power to the EEC-IV via a yellow/black wire. I disconnected this wire at the relay and BOOM, power draw disappeared.
Couple questions:
1) is 150mA typical ignition off power draw for an EEC-IV relay?
2) If not, how would I go about troubleshooting the exact source of the power draw.
(Draw test performed with multi-meter in series to battery