Frequently Asked Questions - Boss Audio Systems ISO140 User Manual

1.
Select a suitable location that is easily accessible and is close to your start battery
and second battery.
2.
Using four screw holes on the supplied mounting plate, mark four mounting holes
on the mounting surface.
3.
Identify two conical holes (countersink) in the diagonal position on the mounting
plate. Then correctly orient the mounting plate and fix it on the mounting surface
using the conical holes and two supplied flat head screws (0.75"/19 mm).
A means conical holes (countersink); B means cylindrical flat-bottom holes
(counterbore).
4.
Correctly orient the isolator and mount it on the fixed mounting plate. Fix the isolator
using the cylindrical holes and two supplied domed head screws (1.5"/38 mm).

Frequently Asked Questions

Q: What does LED on or off indicate?
A: When the LED on the isolator is on, both batteries are connected together and
therefore are both being charged simultaneously. When the LED is off, both batteries
are disconnected and simultaneous charging of both batteries is not possible.
When the battery voltage (start or second battery) increases to at least 13.3V, the
isolator is automatically switched on and thus its LED is on. When the battery voltage
drops to 12.8V, the isolator is automatically switched off and thus its LED is off.
Q: Is it safe to use a large amperage alternator with this isolator?
A: This isolator handles a max 140A. The alternator must be 140A as maximum output.
For reassurance, a 140A circuit breaker or fuse should be used.
Q: How do I solve the issue of the isolator frequently clicking on and off?
A: The frequent cut in and out of the isolator is caused by improper grounding. Make
sure the chassis ground point of the isolator is on the clean and bare metal (no paint
coated). Simultaneously, check the ground cable connection on the isolator is secure.
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