Everytime I plug the fuses in my orion hcca 250g4 the fuses pop. What do I need to repair. It's the amp, not the system wiring.

SOURCE: old schoool orion amp 250-hcca

Wiring Codes for SX and HCCA
Orange = Right Positive
Black/Orange = Right Negative
Yellow = Left Positive
Black/Yellow = Left Negative
Blue = Remote Turn On

You can remove the bottom of the amp and the colors can be deciphered as to which goes to which pin in the plug. Go to this link on AmpGuts for a reference.
http://www.ampguts.realmofexcursion.com/Orion_HCCA250/

And here is a link where you can buy a new plug on ebay for $25.
http://cgi.ebay.com.my/ws/eBayISAPI.dll?ViewItem&item=110093583828&indexURL=

SOURCE: orion hcca 2100 old school

Try this page:

http://www.orioncaraudio.com/Support/Manuals/Amplifiers/HCCA%20Series/Orion%202100HCCA%20Installation%20Manual.pdf

SOURCE: orion hcca 15.4 two woofers two d5ooo orion amps

if you want a nice thump or sound i suggest face them towards the back of the car that way the vibrations bounce off your trunk and hit you hard
thats how i have my 2 clarion 600's and thats the only way the pound good and they sound the best facing the trunk

SOURCE: orion hcca 250 digital reference

if its hot its drawing to much current sound as if you have something improperly hooked up..if i could see your wiring i could help u out better steve

SOURCE: orion hcca 250 digital reference & orion XTR 12" 500w dual subs

If you have one sub dual voice coil, just paralel the sub and conect to brigde amp. Simple...