Topic: Radio stays on
in Forum: C3 Electrical
Already a Member?
Click Here to Login
Not yet a Member?
Click Here to Register for Free!
Lifetime MemberOceanside, CA - USA
Joined: 11/19/2003
Posts: 191
Vette(s): 1978 Silver Anniversary model. Original L82 engine, 700r4 trans, edelbrock intake, thorly headers, rack&pinion steering, mono rear and front spring, MSD 6A box
Starting about 2 weeks ago when I turn the enging off my radio stays on for approximately 5 seconds. After I turn the engine off I can turn the radio off and it goes off but, if I turn it back on within the 5 seconds it will come back on until the 5 seconds elaps. The only thing I have done in the last 2 weeks is put on a nosie filter between the radio hot wire and the fuse box, and replaced the antenna. I think I took the nosie filter off and it still did the same thing but not sure if I did or not. Any ideas?
SPONSOR AD:: (Our Sponsors help support C3VR)
Lifetime MemberHOWELL, NJ - USA
Joined: 5/18/2004
Posts: 6812
Vette(s): 1979, Targa Blue (72 Color), Pace Car rear spoiler, L88 hood, Dark blue factory interior, 525HP 406, HD 700R4, 370 gears,Steeroids, composite rear spring, TT IIs wrapped in T/A Radials.
Put a test light on the hot wire before the filter and turn the car off. Then do the same after the filter. If you're getting juice after the filter but not before, it's got something to do with the filter. If it does light on both sides or doesn't light the test light on both sides, it's something further back in the wiring or in the radio itself - but at least you can prove out you new filter.
It sounds to me like your filter is the culprit. Never heard of that being a condition with a noise filter on a radio before though. Does that bugger get warm or hot with the ignition on and the radio playing or when it's off?
Good luck!! 
Paul
LukesVette Homepage
Veteran of Operation Iraqi Freedom
101st Airborne(AirAssault!)
God Bless America
Support Our Troops 
Former Member
Send PM
Mounds View, MN - USA
Joined: 5/24/2007
Posts: 1031
Vette(s): 70 LT1 coupe, 69 350 HP coupe, 69 390HP 427 coupe, 71 LS5 convert, 85 coupe, 93 coupe
Some noise filters are, or contain, a capacitor. The radio staying on is just the capacitor discharging. It is perfectly safe.
Larry
Larry
Lifetime MemberOceanside, CA - USA
Joined: 11/19/2003
Posts: 191
Vette(s): 1978 Silver Anniversary model. Original L82 engine, 700r4 trans, edelbrock intake, thorly headers, rack&pinion steering, mono rear and front spring, MSD 6A box
Thanks guys I'll try checking the filter with a test lite. I have been tied up with other things but tomorrow I should be free to check things out. Thanks again.
Eddie
Lifetime MemberOceanside, CA - USA
Joined: 11/19/2003
Posts: 191
Vette(s): 1978 Silver Anniversary model. Original L82 engine, 700r4 trans, edelbrock intake, thorly headers, rack&pinion steering, mono rear and front spring, MSD 6A box
Larry was right. Took the filter off (it wasn't doing any good anyway) and radio turns off with the switch.
Thanks.
Former Member
Send PM
Oak Creek, WI - USA
Joined: 5/21/2008
Posts: 1965
Vette(s): 1981 Great White Shark. Red Interior, 350/190 hp. PS, PB (SS), A/C CC, T-Tops. Served three years in Active Duty Army, then Retired Air Force after 34 years! Badger State Vettes Car Club. 175,000 Original miles!! Now own a 1998 C-5!
That was an easy fix!! Nice looking car, Eddie
Dan
in Forum: C3 Electrical
SPONSOR AD: (Our Sponsors help support C3VR)