Power/ Ground Problem. Im running a 6ga Power wire to the battery (approx 6')with a 40amp fuse. The amp turns on, then about 10 seconds later blows the fuse. The ground is the same ga wire and is grounded about 2' away from the amp.

The cooling fan motor is likely drawing to much current because it is worn out.

Sounds like someone shorted the wires...you need to look into the entire butcher job and see what wires were touched. Disconnect everything the butcher did and then see if your battery is still drainning power.

Your ohm load is probably too low.

The fuse doesn't blow till you turn on the light switch? If it blows before turning on light switch, look for a short to ground between fuse box and light switch.
If it blows after turning on light switch, I believe they make a short finder tool.

Go over all your wiring. Make sure your power wire isn't grounded somewhere. If your power wire is touching any bare metal it will spark and blow the fuse the second you touch the power to your amp. Make sure your in-line fuse is about a foot from your battery, and make sure you have your ground wire grounded securely to the main chassis of the car/truck and that it is either same size gauge as your power or even a little bit bigger gauge. Also make sure no strands of wire from your ground or power wire are loose and reaching over touching the other where you plug them into the amp. If the ground and power touch eachother they will blow the fuse and possibly cause permanent damage to the amp.

sounds like eithor over draw or short
yes you can over draw the wires

Hello super11dt,

Sounds like the power and ground wire are shorting. Check the power wire with a multimeter. Sometimes, the insulation gets rubbed off and it contacts the vehicle metal causing a short. The solution is to pull a new wire and install a grommet or bushing wherever it goes through the firewall.

Actually, the negative (ground) wire should not be run to the battery at all. It should be secured to the metal of the vehicle as close to the amp as you can get, preferably within about 3 feet.

Hope this helps.

Oh my yes. I would recommend number 4 as a minimum. Use the same size for the ground. Bond it to the body in the best way you can. Use a CAD welder if you know anyone in the pipeline industry.

But ideally, run the biggest guage you can afford. and FUSE IT!! Zero Guage or better, and buy a fuse block and put it at the battery. Otherwise your crash could be a crash and burn.

If it keeps blowing fuses then #1 its internally damaged or "blown" .. Or #2 i would make sure you have the battery power hooked up to the + terminal and the ground wire running from the car body to the - terminal.. so if its hooked up correctly and keeps blowing fuses then it requires repair.. I wish i had better news but thats all it can be...

The only effective way to troubleshoot this is with a digital multimeter. Test for voltage on the power terminal and the remote terminal (using the ground terminal for your black probe). If you have voltage on both terminals, check the amp's built-in fuses; if they're good, then you must have a defective amp. If you have voltage on the remote terminal, but none on the power terminal, check your fuse and fuse holder at the front. It's not unusual to have a blown or defective fuse that looks okay.