we replace 3-4 blower motor resistors a week.... Most of them on cars tho..
Not sure where it is located on the ranger, im sure rwenzing (sp) will chime in and let you know...
Although there wont be any "burn" marks, they just go bad... they arnt that expencive either...
Most cars are located under the pass side dash, wherever the blower motor bolts to the evap. box.. May be outside on the fire wall also...
If you lived closer ide help you out..
Its funny though, when people come in complaining of 1 or 2 speeds.. but yet its cold as hell, and other people have to spend 2k$ to get the ac working... so BE GLAD ITS COLD!! haha..
2006 Jeep SRT-8 Grand Cherokee
K&N Intake, Magnaflow Exhaust, Eibach Lowering Kit, Custom Tunes, FRI Lilboy Cam 114 LSA