Hello, Help, And What Is It?
Thread Starter
|
Junior User
Joined: May 2009
Posts: 57
Likes: 0
Hello, Help, And What Is It?
I'm new here......but I've been learking for some time. I have a 79 F150 4x4 auto with a 400. IMO the '70's where the best body trucks. Here's a pic.
I've been fighting electrical gremlins and decided to tear apart the dash to clean it up and do some upgrading to the wires. I came across this thing (resister?) and was wondering what it is, if it's needed, and where can I get another. I appreciate your help.
I've been fighting electrical gremlins and decided to tear apart the dash to clean it up and do some upgrading to the wires. I came across this thing (resister?) and was wondering what it is, if it's needed, and where can I get another. I appreciate your help.
MSEE
Joined: Apr 2004
Posts: 10,386
Likes: 35
From: Austin, TX
That is a supression choke that would have been part of an old radio. It's inline with the radio's power source to reject noise from the ignition.
Remove it; you do not need it. You can remove it by unplugging it from the original radio pigtail (the green connector). In fact, you need to do this because the other wire is coming off the dash illumination circuit and is exposed; that's why the end is burned. You should already have a noise supression capacitor coming off the voltage regulator under the hood which effectively does the same thing. Additionally, modern head units have sufficient input filtering so that devices such as these are not necessary.
Remove it; you do not need it. You can remove it by unplugging it from the original radio pigtail (the green connector). In fact, you need to do this because the other wire is coming off the dash illumination circuit and is exposed; that's why the end is burned. You should already have a noise supression capacitor coming off the voltage regulator under the hood which effectively does the same thing. Additionally, modern head units have sufficient input filtering so that devices such as these are not necessary.
Thread Starter
|
Junior User
Joined: May 2009
Posts: 57
Likes: 0
Thanks for the welcome! Thank you fmc400 for describing what it is. It sure does explain why maybe the radio started doing crazy noises and why I had no dash lights. It was wedged in there and must have been shorting out. I'm also upgrading the headlight wiring with relays for higher output bulbs.
Trending Topics
Thread Starter
|
Junior User
Joined: May 2009
Posts: 57
Likes: 0
I did fix ALL my interior and exterior lighting problems including my instrument cluster.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
Thread Starter
|
Junior User
Joined: May 2009
Posts: 57
Likes: 0
The CB radio goes direct to the fuse block. I'd have to look at the radio/cd player. One power wire is connected to a solid green wire and the other is on a in-line fuse to I believe the fuse block, but I'm not sure. I'd have to look. The CB radio was installed by PO about 12 years ago. And I just replaced one radio for another. Leaving it the way it was and I just replaced all the speaker wire to the doors. The radios work great with that choke there. I have since taped/wraped it up and reconnected the broken/bad wires and moved it out of the way.
Thread Starter
|
Junior User
Joined: May 2009
Posts: 57
Likes: 0
After digging more into this I found that the PO has it wired so that there is no battery drain. When the ignition is off there is no power to the radio for things like clock and memory settings. I checked any battery drain and there is zero, nothing, nada. Explains why the old battery lasted 9 years and was still going. Since this truck is not a daily driver (same as PO) I decided to leave the wiring the way it is. If that noise suppressor gives me problems, I'll think about rewiring it since I also installed a battery cutoff when I upgraded/replaced the battery this year. Thanks for all the feedback