Recent content by LaunchD

Update Dear Friends, We've discovered the cause of the "weird" voltage spikes on the aux battery. In short... The "main output" of the isolator would blow/open circuit (reason still not known - however, possibly to due under-sized isolator for the application). With the main batteries...

My advice would be to ASK the manager. He'd probably have the best interpretation ;)

I've gathered some info from GM. The charging system schematic is linked, below. The isolator and aux battery are installed by a third party (no schematics or info available), so I will have to verify how it is actually wired up. Thanks for your input, I'll post more info once we 'scope' it...

Has anyone seen similar experiences or have any ideas to the situation below?... On a fleet of 2006 GMC trucks (modified into shuttle coaches), we have experienced a problem with battery isolators and auxiliary batteries that "blow up". The stock GM truck has two main batteries and two 105A...

Thanks for the help :) Your input has been useful in my decision. Dave

Thanks for the input, thus far. I should add that this decision (to use them or not) will affect a fleet of over 1000 city buses. Dave

I have a question regarding the rubber boots that are found on the positive terminals of alternators and starter motors. Do we really need them? Currently, I have seen instances where the boot collects more dirt and water than it shields. Over time, the boots become brittle and have to be cut...