Hi, Dave (and all), Hmmm ... aside from the "Made in Malaysia" part (mine's Portuguese), we're definitely dealing with the same relay. F'rinstance, click on http://thedrive.de/tdshop/Bosch-Trennrelais-12V-75A-0332002156 and this relay pops up -- from several vendors -- described as a battery isolation relay for campers, etc. If you Google "Batterie-Trennrelais Bosch" it'll also appear. The write-up only mentions the function of opening when the engine stops running, not when the voltage drops, which the VW shop manual mentions.
As soon as the sun comes back out I'm going to do the wiring and see what happens. I've got the physical installation done, just not the wiring. Thanks, Dave. I'll report. Bert -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Dave C. Bolen Sent: Friday, March 15, 2013 12:31 PM To: [email protected] Subject: RE: [vintagvw] Battery isolation relay -- number Bert, Don't know for sure what/where/how you bought what you did, but according to the net it is a glow plug relay. http://www.ebay.com/itm/Diesel-Glow-Plug-Relay-BOSCH-0-332-002-156-/17064751 6431 example schematic here. http://www.fordmuscle.com/archives/2003/02/electricfan/index.php This might not be what you want. You might want to take a look at this and use something similar from a real vw? http://www.thesamba.com/vw/forum/viewtopic.php?t=297050 Cheers, dave On Fri, 15 Mar 2013, Bert Knupp wrote: > Dave (and all), > > The new Bosch Batterietrennrelais is Nr. 0 332 002 156. It has a > schematic printed on top -- but that doesn't tell me exactly what I need. > > Bert > > -----Original Message----- > From: [email protected] [mailto:[email protected]] On > Behalf Of Dave C. Bolen > Sent: Friday, March 15, 2013 10:34 AM > To: Vintage VW Air-Cooled Discussion Group > Subject: Re: [vintagvw] Battery isolation relay > > Bert, > > Part number for the new Bosch part please? > > > Also, Let's think through your description of how this really works. >> From you explanation of the original relay wiring that has only 4 >> terminals, > I am not sure that it works the way you think it does. > > On the original: > > 51 is the feed providing charging power to either of the two > batteries(or could it only be both at the same time!) > > 61 is ground when the generator is off(I am pretty sure) > and provides a small positive comparison voltage > when the car is charging(red light on or off comparison > to the battery charging state). > I am going to guess that when the charging system was "off" that you > could pull the equipment battery all the way down and it would charge > up after you restarted...andthat was about it. > > On the other hand...I have never owned one ofthese of a bus with the > dual battery and don't know how it worked in a late model bus. My bet > is that both batteries got the same charging current after the engine > was started, but the equipment battery would give it's all and then > that would be that till you restarted the car. > > Do you have a type2 manual with the same relay described in it? Seems > kinda weird that VW (or Bosch) would use different devices to do the > same thing for VW. > > Send the part number! Bet I can find a reference diagram. > > Cheers, dave > -- Visit the VintagVW archives at http://mail-archive.com/[email protected] --- You received this message because you are subscribed to the Google Groups "VintagVW - Air Cooled Volkswagen Discussion List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/vintagvw?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
