I recently replaced my ailing Sure Power 1315 with a Blue Sea 7622 as described in https://www.sportsmobileforum.com/fo...0&d=1662043356
My 06 diesel had the Sure Power wired with assisted start and I wired the 7622 with start isolation. I reused the wire connected to the Sure Power start assist terminal and connected it to the Blue Sea brown wire (isolation #1). Wiring to Blue Sea is house battery to terminal A, starting batteries to terminal B, ground to ground buss bar, and isolation #1 to the wire used for the Sure Power start assist. Ground has a 10a fuse, isolation #1 has a 2a fuse.
With the Blue Sea yellow switch in the remote position and the inner button not depressed, the van started without issue. However, when I tested the voltages at the Blue Sea A and B terminals, it didn't seem that the house battery was being charged (e.g. starting battery at around 14v, house battery at 13v). Turned off the van and scratched my head.
Thinking that I perhaps misunderstood the yellow switch, I set the switch to remote with the inner button depressed. When I tried to start the van, I hear a dreaded sparking sound, the dash goes dead, and no joy on starting.
The yellow switch is now in the lock off position. With the ignition key in the accessory position, things seem to work as expected. Radio, power windows, head lights all work. However, with the key in the on position, none of the above work and do the dash gauges and lights don't work. Key to start is same as on with the added joy of no starting (no clicking sounds, just a very depressing silence). There also seems to be a steady drain oh the starting batteries (voltage has dropped from 12.5 to 11.7 in half a day with no apparent draws). I've disconnected that starting batteries to try to preserve them.
All house battery stuff (lights, inverter) works as expected.
Anybody have an ideas what I fried by trying to start with inner yellow button depressed? At this point, it's looking like I'll have to have the van towed from my garage to the shop and make a contribution to my mechanic's new boat.