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Posted by Natedaman_99, Dec 7, 2005
Newbie Forum - Beginner/newbie/general DSM modification questions. First mods, how to run 10's when you haven't run 12's yet, any tech question that doesn't fit in another tech forum.
If it's the 10A fuse, then the relay is bad (try swapping with another one same type). If it's the 30A fuse, then your blower motor is probably going (or you have a short in that line).
This points to the blower switch, not the blower or the blower resistor. (FYI: Position 4 (hi) puts 12V on the blower. The other positions place resistors in series with the blower to lower the speed.)
Its is blowing the 10A fuse.
So you say resistor pack then Defiant?
Thanks luv2rallye the only other thing i have to add i guess is that since this yesterday now the blower will work and not blow the fuse if i use it at 1 or 2. It seems to just blow the fuse if i go over the 1 or 2 position. So do you think that it has to be the switch then?
Will do thanks again i will post back after the test.
The only thing on the 10A fuse is the blower relay (coil side), the blower switch (but a completely different and separate circuit than the blower side resistors part of the switch), and the A/C & defrost switches. Assuming no wiring has been changed, with positions 1 & 2 working fine, the only thing that makes any sense as to why the fuse would blow would be if that other half of the blower switch (not the resistor half) is partially shorting to ground on positions 3 & 4. You could test this by temporarily cutting the blue/red wire at the blower relay or the blower switch OR cut the white/black wire at the blower switch or A/C switch or defroster switch. Note this will make your A/C (and defrost A/C) not work but if you need a test.... The only other thing would be if the relay coil is bad but only on positions 1 & 2 which doesn't make any sense. The relay is on when ignition is on. The blower turns on when the switch connects the other side of the blower to ground (thru resistors for positions 1, 2, and 3). Best bet is still the blower switch, second is the blower itself, third the relay.
None of the stuff has been changed or tampered with at all. The AC and the rear defrost were not on at the time the fuses were blown. This morning again it worked fine on setting 1 and 2 and they both worked normal slow on 1 a little faster on 2. Also just to try it out i used the rear defrost with the blower on setting 1&2 and it worked just fine. I haven't been able to do much to get in there and look around no time until the weekend just looking for advice on what to look for so thanks defiant and luv2rallye.
Ok sorry my bad i thought you were talking about the rear defrost switch. Thanks again.