Hi i just installed a boss am/fm receiver in my boat it works for about five minutes then start to turn on and off, on and off. any suggestion.
I'm not experienced with the boss, BUT..... the symptom suggests that you have wired the receiver into a circuit which:
1. has too low a curent rating [not enough amps] for the receiver device, AND....
2. is protected with a SELF RESETTING circuit breaker.
IF that is the situation, then the OVERLOAD caused by the too heavy receiver is causing the circuit breaker to "TRIP" and cut off the electric power in the circuit.
Self resetting breakers work by having a bi-metallic strip inside which causes the strip, when overheated by an overload, and in bending, OPEN the circuit, cutting off the power. This reduces the risk of an electrical fire!!!!!
When the bi-metallic strip cools enough, it RE-CLOSES the circuit, turning the power back on UNTIL the overload causes to to trip again.
This is a safety/fire protection issue, AND you need to take your vehicle to a QUALIFIED [CERTIFIED preferably] vehicle sound shop where a qualified TECHNICIAN can troubleshoot the issue, and probably will either find a more powerful supply circuit, OR....
ADD a new, adequately sized wiring circuit to support your sound equipment.
What this issue sounds like is that YOU have installed a sound system/device which needs MORE POWER than your existing circuit can safely provide!!!!!!!!
Be SAFE, get PROFESSIONAL HELP!!!!