Fuse Question - to delete or not to delete?

[fallingat120mph]

First: This 911 will be with me forever so am making changes and not worried about the proverbial "next owner".



Fuse question:

I have deleted my 'headlamp washing system' and am tracing the wiring which leads me to a question.

Fuse location #3 is for "headlamp washing system/folding top" of which I have neither.

I see the fuse is 'jumpered' (white arrow).



Do I need a fuse in the #3 slot even though the accessories have been deleted?


Follow up question:
Per the yellow arrow if possible can I disconnect/delete that wire - if it is non essential and connected per the system I deleted. (?)

I am trying to minimize the harness and connections as the previous owner did a hatchet job on many many systems/wires. So many things cut and taped off...
Per the forums and manuals they really don't address deletions of this type.

I appreciate the patience and responses as I am learning and it seems my questions aren't normal or in the 'searches'...




Thanks for any input!
Erik

[Discseven]

Erik... given the wiring being treated as you say by the former, I'd be inclined to remove both bridges, make a note of doing so, and keep the bridges by the fuse panel somehow---so they're handy if needed. Down stream, it's possible you may want to use that circuit (provided it has integrity) for something. So perhaps there's a consideration to leave the wiring in place rather than yank it if that is what you are planning.

[E Sully]

I believe those straps are original, and you should leave them in. Porsche has a habit of using straps to carry battery power across the line side of fuse holders. On some years the straps are behind the fuse panel out of view.
I see no problem with leaving the fuse out if not used. As far as removing the wire, that would be your choice, but I would leave it connected and just worry about capping off whatever ends the previous owner messed with.

[75 911s]

You don't need a fuse there, although you can stick one there and have an extra on hand in case you need one in a pinch. The bridge is stock and it can be slid out if you want to not carry power over to that terminal at all. Just keep it.

[fallingat120mph]

Originally Posted by Discseven

Erik... given the wiring being treated as you say by the former, I'd be inclined to remove both bridges, make a note of doing so, and keep the bridges by the fuse panel somehow---so they're handy if needed. Down stream, it's possible you may want to use that circuit (provided it has integrity) for something. So perhaps there's a consideration to leave the wiring in place rather than yank it if that is what you are planning.

Originally Posted by E Sully

I believe those straps are original, and you should leave them in. Porsche has a habit of using straps to carry battery power across the line side of fuse holders. On some years the straps are behind the fuse panel out of view.
I see no problem with leaving the fuse out if not used. As far as removing the wire, that would be your choice, but I would leave it connected and just worry about capping off whatever ends the previous owner messed with.

Originally Posted by 75 911s

You don't need a fuse there, although you can stick one there and have an extra on hand in case you need one in a pinch. The bridge is stock and it can be slid out if you want to not carry power over to that terminal at all. Just keep it.

Thank you all. Up at 4am debating/researching and I agree - going to leave in place, most likely leave the fuse (no harm) and have finished capping all "dead ends" that I couldn't delete without opening the harness wide open.

At sunrise and a cup of coffee it boiled down to "if it ain't broke' don't fix..."

Again, thank you very much!
Erik

[76FJ55]

Just for verification on removal of the jumpers:

They need to stay in play or a modified jumper would need to be implemented. when you look at the power coming into the fuse block in that area you will notice that power is carried in on the red wire at the top of fuse # 4 (counting left to right). the first jumper to the left of the red wire carries power to fuse three (the fuse you removed), and also is the first half of the current path to fuse 2 via the second jumper. If you remove either or both of the jumpers you will no longer have power to fuse #2. if you truly didn't want power coming into the top of fuse #3 you would need to remove both jumpers and then fabricate a new jumper that went directly from fuse #4 to fuse #2 bypassing fuse #3.

[fallingat120mph]

Originally Posted by 76FJ55

Just for verification on removal of the jumpers:

They need to stay in play or a modified jumper would need to be implemented. when you look at the power coming into the fuse block in that area you will notice that power is carried in on the red wire at the top of fuse # 4 (counting left to right). the first jumper to the left of the red wire carries power to fuse three (the fuse you removed), and also is the first half of the current path to fuse 2 via the second jumper. If you remove either or both of the jumpers you will no longer have power to fuse #2. if you truly didn't want power coming into the top of fuse #3 you would need to remove both jumpers and then fabricate a new jumper that went directly from fuse #4 to fuse #2 bypassing fuse #3.

Thank you. I was researching upgraded fuse boxes and it seems they integrate the same concept.

As I am a novice with electrical systems - it seems that is by design and that is enough for me at this point to leave well enough alone.

Without taking the harness out and starting from scratch I will clean contacts/update(new) fuses and just let things be.

Thanks again for the input...maybe this will help others in the future.

Erik