HTML Code:
On W123's, IMHO depending on electrical heat is a *bad* idea - the stock alternator doesn't have much capacity left to run heaters. And electric heaters mean big power and fire risks.
DD44- I agree. I have replaced atleast 5 alternators on my car until I realized the excess electric load was killing them. I upgraded from 50 amp to the 65 amp version which helped some but even these can't keep up. I have a Vegatherm and an electric heater on my filter that I won't run any more because of this. Luckily all the alternators were covered under lifetime waranty. Another option is to go to the Saab/Bosch alternator w 90-120 amps.?
Paul