Bertram31.com General Bulletin Board

Re: Battery isolator wiring

Posted By: bruce
Date: Wednesday, 9 February 2005, at 6:12 p.m.

In Response To: Battery isolator wiring (Rick)

Ricky,
Like Chiles said, isolators are on the charging side of the system, not the starting side.

If you can start the engine, put a meter on the output of the alt and check voltage, it should be at around 13.6vdc.

Then check each battery for voltage and see if they read the same. The voltage will be lower at the batteries than the alt because isolators will drop voltage. As much as 1 volt which leads to poorly charged batteries all the time.
This will tell you if the isolator is working.

The reason why the jump button or paralell switch won't work is because its coil may be fed from the dead battery.

The proper way to do it is use a spdt momentary switch that uses either battery to operate the coil on the jump.

If you want a diagram of how to wire, let me know.
bruce

Messages In This Thread

Battery isolator wiring
Rick -- Wednesday, 9 February 2005, at 2:09 p.m.

Re: Battery isolator wiring
mike ohlstein -- Wednesday, 9 February 2005, at 3:13 p.m.

Re: Battery isolator wiring
Chiles -- Wednesday, 9 February 2005, at 3:26 p.m.

Re: Battery isolator wiring
bruce -- Wednesday, 9 February 2005, at 6:12 p.m.

Re: Battery isolator wiring
andre fourrier-Louisiana -- Wednesday, 9 February 2005, at 8:07 p.m.

Re: Battery isolator wiring
bruce -- Wednesday, 9 February 2005, at 8:28 p.m.

Re: Battery isolator wiring
CMP -- Thursday, 10 February 2005, at 8:49 a.m.

Re: Battery isolator wiring
bruce -- Thursday, 10 February 2005, at 8:47 p.m.