[aj88cab]

Originally Posted by Ironman88

I've been spending time trying to get at the source cause(s) of the failure of these heating components.

Seems like the failure of the rear heater blower relay is a core issue - and the cause of failure as I've noted is either use of an improper battery charging means or method, or an "overcharging by the alternator".

The over-charging by the alternator has me concerned - because it seems like that condition would likely cause a replacement blower relay to again fail. (And has been noted, those parts aren't cheap - I just paid about $430 for one.)

Question - does anyone know why the alternator does this, or, even better, what can be done with / to the alternator to avoid having the problem with the relay reoccur??

Ironman88, could you possibly site a source for this information. I am not questioning, nor trying to debate, I am just curious about the details of this...Thx