Does any pink go with any pink- a wiring question

[JGross]

I'm working on the wiring harness for my 5.3 donor engine and it's now time to connect the pink wires to the fuse block. I've been following the directions on LT1Swap.com so I have a total of 16 wires to connect to 3 terminals on the fuse block.



That means that I'll have to group the wires in three sets, two of 5 wires and one with 6. So here's the question does it really matter which wires are grouped together? Does it matter if 5 of the injector wires are in one group with 3 in another or if both coil pack wires are in the same group. Before I go to the trouble of tracing out each of the wires so that certain ones are grouped together, I thought I'd get your onion.

Thanks

[bohmankid]

I don't have a definite answer, but I've heard people only forming the pink wires into groups of two. The guy I had rewire my harness also put them into a group of two and told me to put a 15amp fuse into each group. I'd also like to learn more.

[TopFuel1966]

You could use one of these fuse panels and then use two-gang wire terminals on each connector lug.

http://www.grainger.com/Grainger/COO...=31-62255058-2

[Crash_OK]

I am sure that would be fine..

The factory harness on mine was done like this.. I went ahead and did it the same way.. I am sure this is overkill.. The only advantage I can see is that it might be easier to trouble shoot..

11 15A Coil & Inj. 1,3,5,7
12 15A Coil & Inj. 2,4,6,8
13 15A O2 Sensors
14 15A TAC
15 10A Transmission
16 10A PCM
17 15A PCM & MAF
18
19
20

I am using a 20 fuse block.. once again not necessary but allowed me to move a lot of circuits off the glass fuses to this..

[ls1nova71]

In theory, you could wire all of them together and put one fuse on them. Would it be a good idea? No. You should spend the time and group the left injectors together, right injectors together, left coils, right coils, ect. Personally, I'd use more than 3 fuses. The factory seperates them by left and right, so if you have a problem, and a fuse bliows on one side, the engine will still at least run good enough to get you off the road, versus just going completely dead if it's all on 1 fuse.

[softballnrd27]

I did this^^^^
L/R inj, L/R coils, 02/MAF, PCM, Ign. I used 8 total fuses with 2 of the fuse blocks on LT1Swap

[rmvlt1100]

I used a Current Performance SA-1000 Engine Management Fuse Block.
http://www.currentperformance.com/Ac...ies/SA-1k.html
It adds an extra fuse block but it helped seperate the wires so there all not on 1 circuit. It has ignition circuits and battery constant circuits along with relays for the fuel pump, A.C. fans and others. Good luck with the conversions.

[chevyman70]

I did injectors and coils on one, sensors on another one.

[chebyshortbox65]

It's better to run the left coils and injectors together and the right coil and injectors together then the 02,maf,ecm and trans together that's how I do it when I rewire every harness I rework that way if you have a wire short out for an injector on the left side then you know where to look and I always power up the fuse block with a relay
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[yossarian19]

Do you have labels that I just can't see for what all those pink wires go to?
If not, I'd trace them all back to their connectors and label them.
Then fuse them like the factory did, or like Painless does. You can find Painless's instructions file at summitracing.com, scroll most of the way down the .pdf & copy their layout.
The reason not to blindly lump them together is that you will have a hard time trouble shooting it later on if you do. Labeled wires through appropriately ganged & sized fuses, plenty of harness tape & some split-loom over that. Trouble-free.

[JGross]

This is what I wound up doing, thanks for all the suggestions.

[kevinc]

Originally Posted by JGross

This is what I wound up doing, thanks for all the suggestions.

Ooooooooh, Nice! Tell us more. WHere did you get it from? Do you have a parts list?

[BR3W CITY]

yikes thats clean, makes me feel exposed with my fuses open underhood. I'd also like to know the source for that product!

[yossarian19]

Looks to me like it's 3 fuse blocks, 4 fuses each, w/ two relays & the OBD2 connector, all enclosed in a Home Depot outdoors electrical box. Might be Lowes.
The fuse blocks, OBD2 connector, relays & relay plugs are all available at http://www.rjminjectiontech.com/
I'm totally going to steal that outdoors electrical box idea... very nice install!

[68GMCCustom]

nice setup...clean. Only thing I see is having the OBDII port in a box might not be convenient...unless you're running an extension to somewhere in the cab.

I only say this as my OBDII port gets used constantly. If not scanning/logging with HPTuners...I have my Aeroforce Interceptor so I can monitor more then my gauges show.

[JGross]

Originally Posted by yossarian19

Looks to me like it's 3 fuse blocks, 4 fuses each, w/ two relays & the OBD2 connector, all enclosed in a Home Depot outdoors electrical box. Might be Lowes.
The fuse blocks, OBD2 connector, relays & relay plugs are all available at http://www.rjminjectiontech.com/
I'm totally going to steal that outdoors electrical box idea... very nice install!

Close - the box is a NEMA 4X enclosure from BUD Industries PN 1339 I got mine from Amazon. The nipple the wires go through is a 3/4 inch PVC conduit fitting I got from Lowes. The fues blocks relays and OBD2 fittings I got the part numbers from the LT1Swap site.

[yossarian19]

Hah! Funny you mention BUD industries... i posted before I looked around at Home Depot.com and never found the enclosure you used. I then tried Amazon and later visited BUD industries' web site. Great minds must think alike
Thanks for the lead. I really wasn't sure what I was going to do with my fuse panel. I have a couple ammunition boxes (water tight steel type) laying around the garage, thought I might use one of them + a grommet + a hole saw. I think your idea looks cleaner, is easier to work with & is less work, too.

[JGross]

Originally Posted by JGross

This is what I wound up doing, thanks for all the suggestions.

Warning do not use this box for your fuse block. The heat in the engine compartment cause it to brake apart after three months.