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Mike S.
Mike S., Classic Car Mechanic
Category: Classic Car
Satisfied Customers: 7500
Experience:  A.S.E. certified with 25+ years experience.
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1968 mustang: fuse block has one screw terminal.

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I have a 1968 mustang, I didn't like where the fuse block was located so I bought a new 6 fuse fuse block with the updated style fuse. the fuse block has one screw terminal. and 6 fuse terminals. the fuse block comes with no instructions. I rewired the fuse leads, the power leads,I thought would go on the screw pole terminal, but my problem is that one of the lead has constant power and the other lead has ignition power how do I get around this problem.I don't have any electrical experience. but I have a little common sense.

Ok, here is the wiring diagram for the 1968 mustang, click here.

Give me a few minutes to look over this and think about the problem you are having. What kind of tools do you have to test? A 12 volt test light, voltmeter, etc?

I hope this makes sense. From what you are telling me you have two power feeds to the fuse box, 1 is battery power always on and 1 is powered from the ignition switch power when key on. Is that correct so far? From looking at the diagram I do see what appears to be 2 black dots I assume they are refering to as the power feed to the fuse box. Now to determine which is what, you probably have to look at what it feeds. A good hint is I know an emergency flasher can be run without the key in, so I am going to assume the spot on the lower right is battery power, then the other must be ignition on run.

I colored in the wires and shortened where they go.


I don't know why that didn't work, here click here. and


Customer: replied 7 years ago.
the blackgreen are ignition and the blackyellow are constant power
Customer: replied 7 years ago.
the diagrams that you colored in won"t open on my computer

You need the free adobe acrobat reader to open pdf files.

Customer: replied 7 years ago.

1 fuse is 14amp red/ blackgreen is + ign

2fuse is 14amp greenyellow/blkyellow is+ ign

3fuse is 2.5amp bluered/bluered is constant

4fuse is7.5amp brown/blkgreen is+ constant

5fuse is 20amp redwhite/blkyellow is+ constant

I dont understand exactly what you are asking. Just how to get around which pole has straight battery power and which has ignition run power? If you want ignition power just run it from the ignition. Do you have any testers?
Customer: replied 7 years ago.
I bought one of those fuse blocks from the auto part store with 6 fuse inserts and one pole terminal. how would I wire this fuse block or do I need another type of fuse block and where can I get one and what is It called. thanks I have a volt meter, how do you wire this fuse block. there are 8 wires blkgreen+, blackyellow+, 2 bluered ,red,redwhite,brown,greenyellow
How do the fuse holders get its power, is it all from 1 spot. Use an ohmmeter and see what fuse holders are all hooked to eachother, that would be a start. If there 2 spots where they get there power from then there should be some fuses that get its power from 1 source and the others from another. Where did you buy this fuse box? Do you have the link or part number where I can look at it?

This may help.





This, too.





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