Blower only works on high...lights dim and lose power on 2005 Ford E-150

The heater/ac blower only works on high...Would this cause the lights too dim when it is turned on or too lose power when the idle is low??? The Battery and alternator were both tested and are fine

by in Lock Haven, PA on December 13, 2012
2 answers 3 comments
ANSWER by on December 14, 2012
poss bad blower motor resistor
COMMENT by on December 14, 2012
Thank you...I removed blower motor resistor and it is fried...Pain in the ass to remove when plastic is melted together...Do you think this is why my lights dim and the cause of a short circuit?
ANSWER by on December 14, 2012
bad blower motor resistor
COMMENT by on December 14, 2012
Thank you...I removed blower motor resistor and it is fried...Pain in the ass to remove when plastic is melted together...Do you think this is why my lights dim and the cause of a short circuit?
COMMENT by on December 14, 2012
yes could be a major draw and short anything on that circuit