System shuts off -- HELP!

[Bobby322 10+ year member]

Ok, so my system specs are in my sig. I've got it in a 1973 duster, so its pretty old...

- When ever I dont even have my HU in, my lights are dim.

- When I put my HU in when I have my lights on (night), I cannot get it to turn on, it just flashs on and off

- When I am just driving and I hit the brakes, my system shuts off

I just got a new battery and Im pretty sure my ground is good. I have it on frame of car, sanded down to bare metal, with acouple screws in it.

Any help would be great.

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[RNSkipper]

u need a ho alternator

 

[smd4life 5,000+ posts]

check all grounds...and check the + wires for cuts in the shielding and look for sparks!

 

[smd4life 5,000+ posts]

also check the voltage at the bat

 

[Bobby322 10+ year member]

HO alt for just 2 12's?

so check the battery grounds, HU ground, and amp ground?

Im sure all are good.

 

[(Hayden) 10+ year member]

Being that old he probably only has a 60 amp Alt. Maybe try to upgrade to a higher output as previously suggested. Also check the voltage regulator..That might be bad..Should be on the firewall..I don't think they integrated them into the alternator yet back then

 

[Bobby322 10+ year member]

alright, but I dont see how an alt is the problem when I hit the brakes and it all shuts off

 

[Toone 10+ year member]

brake lights draw from battery duh lol

 

[Bobby322 10+ year member]

yeah but alt just charges battery. I can see why Id need a new alt if my battery is dieing, but doesnt seem like a weak alt would cause my system to shut off all the time.

It also shuts off when I put my car in a diff. gear (park, reverse, drive)

 

[Adnan 10+ year member]

defineltly change your alt....the power brakes and the the power used to lighten your brakes lights alone drops your voltage significantly

 

[(Hayden) 10+ year member]

Its a pretty old car Bro. You might have all kinds of shorts somewhere. Where is your ignition wire tapped into? Find another source

 

[Toone 10+ year member]

Alt charges battery but if your pulling from amp/lights/motor etc the amp cant hold the charge up and therefore system goes poof.

 

[Johnny Law.Lulz 5,000+ posts]

lmao system in a duster FTW, i was looking at a 72 for sale a few days ago, broke FTL

 

[BASSMEKANIK 10+ year member]

where in dfw are you at bro? ill check it out for ya if you cant figure it out on your own.

Bass

 

[Bobby322 10+ year member]

Well im pretty clueless as to electrical stuff. Installing my amp/subs is as far as I'll go lol. Im not confident enough to go into all the electical in the car, id screw something up. I guess I will check all the grounds tomorrow and im thinking about trying the big 3, but I have no wire and like no money hahah