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Old 07-16-2010, 09:55 AM   #1
joez74
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Default 1974 Fuse Box Diagram

Anyone have a picture and/or diagram of the fuse box inside the car. I am blowing the 20A fuse right below the "gauges" fuse, but on my box the name for that fuse is broke off so I don't know what it is.
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Old 07-16-2010, 10:32 AM   #2
...Roger...
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thats the RADIO-TCS sol fuse
how do you know when its blown-what is not working ?
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Old 07-16-2010, 12:46 PM   #3
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Quote:
Originally Posted by ...Roger... View Post
thats the RADIO-TCS sol fuse
how do you know when its blown-what is not working ?
Here's the story, I did a complete interior gut out and replaced everything. So I wired my aftermarked radio to a yellow wire in the dash that I tested as hot when the ignition was on, cold when off. Tested it several times with no issues, played great.

A couple of days ago I go out than turn the ignition to show a friend the radio and it has no power. I look at the fuse box and that fuse in question is fried. I disconnect the negative terminal on the battery, change the fuse, reconnect negative and instantly the fuse is fried again. I disconnected the radio wiring from that yellow wire and tried changed the fuse again, bam, same result.

So something is overloading that fuse, I just don't know what. And what is the TCS sol???
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Old 07-16-2010, 03:23 PM   #4
...Roger...
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TCS= transmission controlled spark=emission crap (IMO)
On that fuse is radio,TCS wiring,relay,solenoid etc,hood scoop fresh air fooler solenoid and pedal switch.
Bubba's wire cutters will clean that circuit up nicely.

edit- carb solenoid is also on that circuit.

Last edited by ...Roger...; 07-16-2010 at 03:25 PM.
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Old 07-16-2010, 03:49 PM   #5
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Quote:
Originally Posted by ...Roger... View Post
TCS= transmission controlled spark=emission crap (IMO)
On that fuse is radio,TCS wiring,relay,solenoid etc,hood scoop fresh air fooler solenoid and pedal switch.
Bubba's wire cutters will clean that circuit up nicely.

edit- carb solenoid is also on that circuit.
Thanks Roger!
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Old 07-16-2010, 04:33 PM   #6
paul 74
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Quote:
Originally Posted by ...Roger... View Post
TCS= transmission controlled spark=emission crap (IMO)
On that fuse is radio,TCS wiring,relay,solenoid etc,hood scoop fresh air fooler solenoid and pedal switch.
Bubba's wire cutters will clean that circuit up nicely.

edit- carb solenoid is also on that circuit.
Yes, the TCS solenoid looks like this. I have never figured out how it works so it is basement inventory. But if the Smog Police strike I will have it.

Forget the POR-15 black heat paint, everything on that #340261 1974 intake manifold is absolutely stock and emissions-compliant.

Click the image to open in full size.

Last edited by paul 74; 07-16-2010 at 04:40 PM.
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Old 07-16-2010, 04:33 PM
 
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