Which under dash fuse gives 12V constant? - Honda Civic Forum

7th Generation Civic In the years from 2001 to 2005 Honda released it's 7th Generation Civic. Chassis codes: EM2, ES1, EP3, EU1

Which under dash fuse gives 12V constant?

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Old 09-19-2015
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Question Which under dash fuse gives 12V constant?

Need some help please. I need to connect my aftermarket TPMS device to constant and ACC 12V. ACC is easy and has many sources, but which of the fuses gives 12V constant? Please don't tell me to grab my voltmeter because it's really hard to use the voltmeter where the fuse box is under/behind the steering column.



Here's where I got the pic above and the fuse list below: http://troubleshootmyvehicle.com/hon...-dash-fuse-box

2001-2005 Civic EX, DX, LX Under-Dash Fuses
# Amps Fuse Name/Description
1 15 Amps
Ignition Coil.
2 20 Amps
Air/Fuel Sensor Heater (HX; 2004: DX, LX, EX).
3 10 Amps
Daytime Running Lights.
4 10 Amps
Alternator.
A/F Sensor Relay (HX; 2004: DX, EX, LX).
Cruise Control.
ELD Unit.
EVAP Bypass Solenoid.
EVAP Canister Purge Valve.
EVAP Canister Vent Shut Valve.
Primary and Secondary Oxygen Sensors.
Vehicle Speed Sensor (VSS).
5 -- Not Used
6 7.5 Amps
Power Window Relay.
7 20 Amps
Sunroof.
8 7.5 Amps
ACC Radio.
9 10 Amps
Rear Wiper.
Side SRS (HX).
10 7.5 Amps
Meter.
A/T Reverse Relay.
Back-up Lights.
CarLink Interface Box.
Gauge Assembly.
Keyless Receiver Unit (EX; 2004: DX, LX).
Multiplex Control Unit.
Security Control Unit.
Shift Lock Solenoid.
11 7.5 Amps
ABS.
12 7.5 Amps
Daylight Running Lights (Canada).
13 10 Amps
SRS.
14 7.5 Amps
R/C Mirror.
A/C Compressor Fan Relay.
A/C Condensor Fan Relay.
Blower Motor Relay.
Heater Control Unit-Panel.
Power Mirror Actuators.
Radiator Fan Relay.
Recirculation Control Motor.
Rear Window Defogger Relay.
15 -- NOT USED
16 20 Amps
Heated Seat.
17 15 Amps
Fuel Pump.
PCM (Fuel Injection Computer).
Supplemental Restraint System (SRS) Unit.
18 15 Amps
ACC Cigar (Accessory Power Socket).
19 20 Amps
Turn Lights (Turn Signal/Hazard Relay).
20 20 Amps
Front Wiper.
Multiplex Control Unit.
Windshield Washer Motor.
Windshield Wiper Motor.
21 -- Not Used
22 20 Amps
Power Window Front Right (Passenger Side).
23 20 Amps
Power Window Front Left (Driver Side).
24 20 Amps
Power Window Left Rear (Rear Driver Side).
25 20 Amps
Power Window Right Rear (Rear Passenger Side).
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Old 09-19-2015
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Re: Which under dash fuse gives 12V constant?

Please don't tell me to grab my voltmeter because
Use a test light instead.

Whatever your image link is, I got 403 forbidden.

Dash fuses 2, 3, 5, 7, 15, 16 are constant B+.
Slot 5 and/or 15 may be empty, should be easy to tap if they are.
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Old 09-20-2015
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Re: Which under dash fuse gives 12V constant?

not positive but just by going by the items it is powering i would think #10 would be hot all the time,

like ezone said, a test light is easier then a voltmeter
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Re: Which under dash fuse gives 12V constant?

Thanks y'all. I ended up using #3 (day lights) for constant 12V. Some intermittent power issues but it seems to be a device/wiring issue (I hope).
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Old 04-24-2017
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Re: Which under dash fuse gives 12V constant?

Originally Posted by ezone View Post
Use a test light instead.

Whatever your image link is, I got 403 forbidden.

Dash fuses 2, 3, 5, 7, 15, 16 are constant B+.
Slot 5 and/or 15 may be empty, should be easy to tap if they are.
7 20 Amps
Sunroof.


is constant?
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Old 04-24-2017
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Re: Which under dash fuse gives 12V constant?

Originally Posted by Fo0 View Post
7 20 Amps
Sunroof.


is constant?
Vehicle Y/M/M?

7th gen Civic, dash fusebox, #7 should be hot all the time.
Confirm with voltmeter or test light.
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