A baseboard heater will fall into this category.
they are usually found close to the blower motor.
The blower resistor is located behind the dashboard. It is found behind the heater near the center of the vehicle.
The blower resistor is usually found attached to the A/C-heater box under the hood.
For the 1989 Dodge Ram, the heater blower motor resistor can be found on the passenger's side, on the bottom of the heater box. It is beside the blower motor.
Diagram for location of blower motor resistor can be found herehttp://autorepair.about.com/library/images/bl441a-lib.htm
Hello, Have you found the wiring diagram yet? I also have a Renault master Ambulance, and am looking for a similar diagram Please let me know, my email is Marcin.gabriel@gmail.com
The Renault Master van has been produced since 1980, its also known as the Opel and Vauxhall Movano. The diagnostic port is located in the fuse box, found behind the steering wheel.
rmove the windshield battery, and you can reach in and feel the risistir and plug, it is held in place with two screws, Philip head, they are hard to get to withot removeing the heater blower.
If the heater is running normally on full speed then the likely cause is that the resistor block needs replacing. If you have a Mk 1 then it may be the switch on the fascia panel as it was used to switch the current to each resistor. The Mk 2 replaced the heavy current through the switch by using relays which are distributed around the car in various fuse boxes for some reason. Two will be found under the bonnet. The resistor block itself is mounted adjacent to the blower motor and is almost totally inaccessible without some dismantling of the fascia.
This question has come up before,the answer will be probably one of two faults. The switch itself can be faulty,it "feels" ok when operated but is not passing current.Or,the resistor which regulates the fan speed as selected on the switch is failed.There is a full answer on the site about how to replace the resistor which is found usually in the heater ducting under the bonnet.
On my 1998 RHD Tino,it was on the right hand side of the heater box, near the firewall, beside where the clutch pedal would have hung from in a manual car.Apparently, sometimes it is found on the passenger side, behind the glove box, but not in my car.