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CARBONTECH™ Seat Heater

INSTALLATION INSTRUCTIONS

AND

OWNER’S MANUAL

SINGLE SEAT APPLICATION

With two 12” x 26” Heating Pads

(HI/LO/OFF Round illuminated Switch)

P/N 300202-MWA

Page 3 of 20

Installation Preparation & General Notes:

1. Seat heater system will NOT work on seats manufactured using the “foam in place” (trim

cover glued to foam pad) method of trim cover attachment.

2. If the vehicle is equipped with an anti-theft radio, the radio code must be written down prior

to disconnecting battery cable. The code must be re-entered when the negative battery

cable is re-installed.

3. If vehicle is equipped with an air bag, it is advisable to disconnect negative battery cable for

3 minutes prior to beginning installation.

4. Only use parts and components supplied in kit for the seat heater installation. The supplied

components are carefully selected for optimal performance. Foreign parts may lead to problems

which could result in potential damage to the seat heater components or vehicle.

5. The installation of the heating pads must be free of creases and wrinkles.

6. Seats in vehicles with pre-loaded (power charge equipped) safety belts must be removed and

re-installed under strict adherence to the vehicle manufacturers instructions.

7. In cases where a seat is equipped with an occupant pressure sensor for air bag deployment;

please refer to the manufacturer’s manual for any specific instruction with regard to installing

seat heater kits.

8. After installing seat heater wire harness, care must be taken to ensure all seat motions are still

possible without obstruction and the moving of the seat does not cause any interference that

could damage the seat heater wire harness.

9. Installation of a CARBONTECH™ seat heater system with seats containing seam lines

running front to rear (length wise) is not permitted. Only exception is if the heating pads are

not directly located over the groove/s.

10. The overall side to side (width) of the heating pads must not be altered (cutting not

permitted).

11. Both heating pads must be connected to ensure system functions properly.

Warning: Metal, electrical conductors or hog rings are not to be placed on, through or

across the heating element.

Warning: Do not tap or solder seat heater harness to any airbag circuits. Yellow tape,

tubing and connectors will indicate airbag circuits.

Warning: Do not tap or solder seat heater harness to any pre-loaded safety belt circuits.

Page 4 of 20

Installation:

Open box and remove contents. Check to make sure that the following parts are

included within kit:

Qty Description Part Number

2 12”x 26” Seat Heater Pad 30-0108-MW

1 Wire Harness Assembly 30-4200004

1 Switch Assembly 30-0213-MW

4 Black Tape Strips 30-0110-MW

4 Gold Tape Strips 30-0109-MW

1 Red T-Tap Connector 88-2300003

1 Blue T-Tap Connector 88-167000-TT

1 Yellow T-Tap Connector 88-2300002

2 Male Spade Connector 88-167000-MS

10 Wire Ties 88-8880001

Seat Cushion:

1. Prior to removing seat from vehicle, lay heating pads on seat to verify size & fit.

2. Secure car on a level surface.

3. Disconnect the negative battery cable or make sure that the area to be worked within is

grounded. If you have any doubt concerning the layout of the vehicle wire harness, consult

the wiring diagram provided by the manufacturer.

4. Remove seat from vehicle and place on a suitable work table/area.

Note: Make certain to disconnect all wire connectors prior to removing seat from

vehicle.

5. Disassemble seat as needed to gain access to seat cushion cover attachment clips.

6. Unsnap j-clips and or remove

“hog ring” clips and peel

back cover. See Fig 1 & 2

Fig 1

Fig 2 Note: If trim cover has hook and loop

style tie down, care must be taken

when removin

cover.

Page 5 of 20

7. Measure the width of the center seat area between the

longitudinal seams.

Note: The width must be at least 250 mm (10 in).

The heating pad CANNOT contact the side seams of the

seat. If it does make contact, the seat heater cannot be

installed. See Fig 3

8. Position the heating pad with the label facing down and the wire harness routed towards the

back of the seat area. Adjust the pad so the thermostat is located approx. 25-50 mm (1-2

in) forward of the back rest. In cases where the seat cushion contains lateral grooves (side

to side) to allow for trim cover attachment, a section of the heating pad will need to be cut

out. See Fig 4

9. Once the area that needs to be cut out is marked, remove the heating pad from the cushion.

Measure in board (towards Center of pad) on each side

40mm (9/16 in) and mark. This is necessary to ensure

that the main power supply for the heating pad does

not get damaged or cut. See Fig 5

10. Cut out the marked area. With the section removed, wrap lateral "bridges" with the supplied

black insulation tape. Repeat procedure on remaining sides of cut out. See Fig 6

Fig 3

Fig 4

Fig 6

Fig 5

Page 6 of 20

11. Reposition heating pad onto cushion foam. Make sure thermostat is in the correct location.

(see step 9) Using the supplied gold double sided tape, attach the back edge of the heating pad

to the cushion foam. With the pad attached at the rear, determine the final length.

Note: Make sure that the length difference between the cushion pad and back rest pad is not

more than 275 mm (10-3/4 in). See Fig 7

12. Trim if needed and attach using the supplied gold double sided tape.

Note: Seat heater pad should reach the forward edge of the seat cushion. See Fig 8

13. Route the heating pad wire harness so that it exits the trim cover in an inconspicuous area.

14. Installation is now complete. Double check to make sure the pad does not have any

wrinkles or is folded over onto itself. Once checked, carefully re-attach trim cover.

Back Rest:

1. Follow the same order and procedures for steps 5-13 for installing the heating pad to the

back rest.

Note: For step 11, use 2 pieces of gold double sided tape. One at the top and the other

approximately half way down to ensure the pad will not loosen and wrinkle over

time due to effects of gravity.

Fig 7

Fig 8

Page 7 of 20

Seat Heater Pad Wire Harness Routing/Attachment:

1. Route wires from cushion & back to underside of seat. Use supplied wire ties to fasten

harness to seat.

Warning: Make sure attachment locations will NOT interfere with any seat movement.

Seat Heater Switch:

1. With the seat still removed from vehicle, choose a switch location on a flat surface where the

wires won’t interfere with any seat movement.

2. Mark the location and drill a 19.5 mm (3/4 in) hole using a stepped drill bit.

Note: hand filing may be required for final fitment.

3. Insert switch through opening and snap into place.

Seat Heater Wire Harness:

Remove vehicle scuff plate & kick panel.

2. Start under seat, route main harness through carpet opening toward scuff plate. Route

harness along scuff plate towards the underside of dash.

Note: If opening in carpet does not exist, create as required.

3. Using a digital volt/ohm meter, locate a switched ignition circuit that is capable of handling a

10A continuous current and attach using one of the supplied T-tap connectors. Use Red T-

tap for 18-22 gauge wire, blue T-tap for 16-14 gauge wire or yellow T-tap for 12-10 gauge

wire. Attach spade connector to seat heater harness red wire and connect to t-tap. Note:

Improper installation could drain your battery if you attach seat heater harness to a

constant battery source.

Warning: Never use engine control/ECM, safety device, ABS/ARS or engine cooling fan,

etc. to power the seat heater circuit.

4. Attach ring connector on the black harness wire to a suitable ground source at vehicle.

Note: A T-tap and spade connector can also be used if needed.

Note: Tap/splice into only one vehicle circuit per seat heater harness.

Final Seat Assembly:

1. Re-assemble remaining components of seat.

2. Load seat into vehicle. Do not install mounting fasteners.

3. Re-connect vehicle harness connectors. Connect seat heater switch, main power and

heating elements to seat heater harness.

Note: Heating elements can be plugged into either connector.

Page 8 of 20

4. Install seat mounting fasteners and torque to manufacturers recommended specifications.

5. Re-connect the negative battery cable and test function the seat heater system.

6. Re-check all systems and accessories where components were removed or relocated during

the installation process.

7. Re-install vehicle scuff plate and kick panel.

Page 9 of 20

Troubleshooting:

If system does not heat up or no indication of power.

-Check fuse in seat heater harness and vehicle.

-Temperature of seat may be above the preset thermostat temperature and will not allow

it to come on. (i.e.: sun shining on seat)

-If the light on the heated seat switch does not come on, it could be that the switch bulb is

burnt out (replace switch) or that there is no power to the switch.

-Ensure that all connectors are properly connected and that the ground wire is properly

grounded. (see Fig 9 for wiring diagram)

-Using a digital ohm meter, test only the heating elements (switch not included) from the

under seat wire connector. If no resistance is found, then an open condition exists.

-Check internal wire connectors for an open circuit. If a heating element has an open,

install a new heating element.

-If the heating elements and seat harness tests OK, then a power supply problem exists.

-Using a digital volt meter, start at the source and trace back through all the connectors

and switch to determine where the power loss is occurring. Repair as necessary.

-If the seat heater fuse continues to blow, then a short or bad ground condition exists in

the power circuit.

-If the vehicle fuse which has the heated seat T-tap connected to it continues to blow,

then the tap will need to be moved to another vehicle circuit.

Page 10 of 20

Seat Heater System Wiring Schematic:

CARBONTECH™ Seat Heater Specification (290mm)

Heater Pads:

Size 645 x 290mm

Thickness 1.3mm

Heating Power 0.050 Watt/sq. cm @ 13.8 Volts

Total Heating Power 71 Watts @ 13.8 Volts

Electrical Resistance 2.67 Ohm +/- 10%

Electrical Current 5.17 Amps @ 13.8 Volts

Thermostat Bi-Metal switch: on at 40°C, cuts off

at 70°C

Wire Length 520mm +/- 10mm

Connector Tyco/AMP

Burn Rate <80mm/min. to FMVSS 302

Specification 2000/53/EG

Weight 0.094 kg

Content per Kit 2

Note: All data are valid for the non-trimmed heater pad.

Heater Element

Cushion Heater Element

Back Res

Connectors

2-Pin / White

Relay

Connector

4-Pin / White

Switch

Ground

10A Fuse

Switched Ignition

Source

Fig 9

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