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

Asked by for the 2005 Ford E-150
2 answers 3 comments
poss bad blower motor resistor
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?
bad blower motor resistor
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?
yes could be a major draw and short anything on that circuit