Fuse Size For Heated Seats

[Gary406]

thank you dave

[steve_earwig]

I guess I'll be swapping mine for 10s

[Gary406]

well i was wrong. got the ecu now went to collect it today ..

there is 2 seperate power cable ..

1 for ecu and drivers seat and other for passanger seat alone.

also there is 2 heated seat single wires which both need a feed. the guy said it would be fine to solder together and run 1 feed .

but im thinking 4 fused feeds from battery will be better and safer ????

or should i run just 2 ?

[lozz]

well i was wrong. got the ecu now went to collect it today ..

there is 2 seperate power cable ..

1 for ecu and drivers seat and other for passanger seat alone.

also there is 2 heated seat single wires which both need a feed. the guy said it would be fine to solder together and run 1 feed .

but im thinking 4 fused feeds from battery will be better and safer ????

or should i run just 2 ?

ithink you will be fine with one feed mate,
a couple of fused links on them wouid be good.

if iwas you tho id throw an isolator switch in for the seat motors if your having them on a direct feed from battery,
this is what id do because no doubt kids wouid mess with the seats if they suss out there permantly on,

[Gary406]

Heated seats 15 amps both.

so i'll be ok running 1 power cable from battery for heated seats ?

there is 1 wire for each seat so i could run 2 but might just do 1 for thos since you said 15amp for both

[steve_earwig]

I'm not saying that, the fuse diagram is.

[Gary406]

ok ste. will check my haynes when i find it in the junk cupboard

[Gary406]

my haynes is saying

front right seat 30A
front left seat 30A

[lozz]

from what ican see its 20amp but this info couid be for d9s so it couid difer.


edit correction
30A
Engine running relay, heated seats

.............................................

Fuses
Rating
Supply
Application

F1
Shunt



Ignition + ve
Airbags and seat-belts pre-tensioning ECU, BSI

F2
5A
Air temperature sensor for passenger compartment, heater panel

F3
10A
Instrument panel, brake lights switch, stop lamps, cruise controlsafety switch (brakes), cruise control override switch (clutch), cruise control switch.

F4
5A
BSI

F5
----
Free

F6
10A



+battery

ignition + ve
Engine management control unit

F7
15A
Radio amplifier JBL, alarm siren

F8
10A
Interior lights, boot light, multifunction display, navigation ECU, control unit for memorising seat and mirror positions, alarm LED

F9
5A
BSI

F10
15A
Radio

F11
10A
Separate fuse
Left brake light, third brake light

F12
10A
Right brake light

F13
20A


+ battery
One touch window ECU (driver)

F14
30A
Rear window lift relay, one touch electric window control unit (front, passenger, coupe)

F15
20A
Pre wired supply to towbar

F16
20A
Control unit for memorising seat and mirror positions, electric driver's seat

F17
20A
Electric passenger's seat

F18
10A



Separate fuse
BSI. Illumination: switches, heater panel, display unit, automatic transmission selector

F19
10A
Rear fog lights and warning lights

F20
-----
Free

F21
-----
Free

F22
10A
Acc + ve
Rain sensor, map reading lamp, courtesy lights, window switches (coupe), glove box light, vanity mirror, mirrors control board, electrocrome interior mirror, control unit for memorising seat and mirror positions.

F23A
20A
Acc + ve
Cigar lighter

F23B
20A
+ battery
Cigar lighter

F24A
-----
Acc + ve
free

F24B
-----
+ battery
free

F25
20A
Acc + ve
Wiper stalk, headlamp wash relay, radio

F26
----
Free

F27
5A
Built-in system interface (BSI), rear window lift relay, key lock (automatic gearbox)

F28
----
Free




Built-in system interface (BSI 1)

Fuses
Rating
Supply
Application

A
20A



Battery + ve
Central locking, dead locking

B
20A
Windscreen wiper

C
40A
Heated rear screen, heated mirrors

D
15A
Rear wiper

E
30A
Electric front windows, sun roof

F
15A
Supply to the multiplexed VAN network






Engine interface unit with 34 fuses. (BM 34)

Fuses
Rating
Supply
Application

MF1
60A












+ Battery
BSI

MF2
20A/40A/60A
Engine cooling system

MF3
40A/60A
Engine cooling system

MF4
30A
Engine running relay, heated seats

MF8
50A
Fuse box BH28

MF9
60A
BSI

MF10
30A
Light switch supply, signaling

MF11
50A
ABS control unit

MF12
50A
Anty theft contact power supply

MF13
50A
Anty theft contact power supply

MF15
?
ABS control unit

MF16
-----

MF17
-----

F5
15A
Horn

F6
15A
BSI

F7
10A
Termostats, fan relay

F14
10A
Headlight wash timer, diagnostic socket,

F18
-----
Separate fuse
free

F19
-----
free

F20
15A
Ignition + ve
Variable power steering ECU, variable suspension ECU

F21
10A
+ battery
Free

F22
-----
Free

F23
10A
Ignition +ve
ABS control unit

F24
10A
Vehicle speed sensor, engine injection double relay, injection ECU, water in diesel sensor

F25
10A OR

15A
+ve after double relay
•Inertia switch, fuel pump (except ESJ94 engine)
•Fuel pump (ES9J4 engine)

F26
30A
Battery +
Engine injection double relay, engine fuel system, fuses 25 - 28 - 34 (BM34)

F27
30A
Engine injection double relay, engine fuel system, fuses 25 - 28 - 34 (BM34)

F28
10A
+ve after double relay
Free

F29
30A
+ battery
Pulsair relay

F30
10A
Front left fog lamp and warnign light on instrument panel

F31
10A
Front right fog lamp

F32
10A
Ignition + ve
Pressostat, coolant thermostat, eigine coolant level sensor, diagnostic socket, reversing lamps, fan relay, relay protection switch unit BCP3 (DW10 engine)

F33
10A
Automatic transmission ECU, selector lever position switch, shift-lock relay

F34
10A OR

15 A
+ve after double relay
- Oxygen sensor heating resistor, cruise control switch (XU engine)

- Engine fuel system, cruise control switch (DW engine)

[Gary406]

fuse 17 in my book is for central locking

[lozz]

The above is D9s,


this is D8


BF00 - 30 Fuse Box (In passenger compartment

Fuses
Rating
Supply
Application

F1
10A
Acc +
Cig. lighter

F1 A
Batt +ve
Cig. lighter



F2


15A




Ign. +ve
Engine coolant level sensor, water in fuel sensor, instrument panel warning lamps, trip computer, vehicle speed interface module

F3
15A
ABS control unit

F4
10A
Sidelamps +
Front left side light, right tail light.

F5
15A
Low beam +
Head lamp height corrector, headlamp wash pump relay coil, low beam warning lamp.

F6
-----
Free

F7
20A
Batt + ve
Caravan socket

F8
Shunt

F9
5A
Side lamps+
Front right side light, left tail light

F10
30A
Batt + ve
Control unit for memory seats and mirrors

F11
One touch window control unit

F12
10A
Ign. + ve
Oil breather re-heat resistor, reversing lamps, A/C engine coolant temperature unit

F13
20A
Batt +
Electrically controlled passenger's seat.

F14
Electrically controlled driver's seat

F15
Alarm control unit, radio telephone, fan relay, engine temp. control unit, control unit for memory seat and mirrors

F16
20A
Batt +
Radio

F16 A
Acc +
Radio

F17
-----
Free

F18
10A
Low beam
Rear fog lights

F19
Side lamps
Illumination: Instrument panel, switches

F20
30A
Low beam+
Left low beam

F21
+ ign. off
Compressor cut-off relay, air conditioning compressor, pressostat, fan relay, heating/ventilation controls

F22
Acc +
Rear wiper and rear wiper timer.

F23
10A
Low beam
Right low beam

F24
30A
Acc +
Windscreen wiper, wiper timer, rear screen heater time switch relay, wiper control

F25
5A
Batt +ve
Radio memory, compact disc player, analogue clock, instrument panel, trip computer, coded anti-start, front and rear courtesy lights

F26
30A
Hazard warning

F27
One touch electric window

F28
15A
Acc +
Trip computer, load warning lamp, rear view mirror control, one touch electric window, ECU for memory seat and mirrors, high frequency receiver for central locking, front window lift and sun roof relay, stop lamps, digital clock

F29
30A
Batt +ve
Front window lift and sun roof relay

F30
15A
Acc +
Front and rear courtesy lamp, vanity mirror, glove box light, "lights on buzer" relay, overspeeding buzzer, radio telephone transmitter-receiver.






BF01 - Fuse Box (Under Bonnet)

Fuses
Rating
Supply
Application

F1
5A/7.5A
Batt + ve
Injection control unit (petrol and diesel)

F2
-----
Free

F3
25A
Acc +
ABS and traction control

F4
20A
Batt + ve
Engine running

F5
7.5A
Relay XUD11ATE

F6
-----
Batt + ve
Free

F7
15A
Head light wash timer

F8
-----
Free

F9
10A
Acc +
Oxygen sensor

F10
Fuel pump

F11
-----
Free

F12
10A
+ after relay

2665
Left front foglamp

F13
Right front foglamp

F14
+ ve after

switch 002
Left head light

F15
Right head light




BMF2 - MAXI (Fuse box under bonnet)

Fuses
Rating
Supply
Application

MF1


50






Batt +ve
Steering lock

MF2
Steering lock, + after ignition switched off

MF3
Supply 30 fuse box

MF4
Lighting and signalling switch, + relay horns

MF5
ABS/traction control

MF6
20
1-Fan Unit

MF6
40

MF7
20
1-Fan Unit

MF7
40A

MF8
Heated rear screen

[Gary406]

your list is correct with steve.

20amps for leccy seats..

think i'll do that then and use a 15amp for the heated seats ..

[Gary406]

ithink you will be fine with one feed mate,
a couple of fused links on them wouid be good.

if iwas you tho id throw an isolator switch in for the seat motors if your having them on a direct feed from battery,
this is what id do because no doubt kids wouid mess with the seats if they suss out there permantly on,

inline isolator switch is a good idea .. i might consider doing that ..

but with all the 3 wires connected direct to battery i think it will be fine as long as the heated seat switches are off.

[lozz]

ithink you will be fine with one feed mate,
a couple of fused links on them wouid be good.

if iwas you tho id throw an isolator switch in for the seat motors if your having them on a direct feed from battery,
this is what id do because no doubt kids wouid mess with the seats if they suss out there permantly on,

inline isolator switch is a good idea .. i might consider doing that ..

but with all the 3 wires connected direct to battery i think it will be fine as long as the heated seat switches are off.

dont the heated seats have a sensor in them?
so if no ones sat on the seats they wont heat up ...

dont know if thats true tho

[Gary406]

thats a question i need to ask in a new post. as well as the seats cutting off if there on for 2 long.