Harness modifications....best way to cut & splice
#22
Teching In
iTrader: (2)
Join Date: Dec 2012
Location: San Francisco
Posts: 19
Likes: 0
Received 0 Likes
on
0 Posts
im builiding a new harness for my swap project, the last one i built back in 2010 i soldered everything, it was rock solid, but Im going for more of a factory look, I am getting my orders together for new micoropack 100w pins for the ecu, gt 150 pins and gt 280 pins since i will be using both connectors. i found some bad *** delphi lever lock connectors used on all 90s =2000s cars that i will be using for main power, and signal where i need to be able to disconnect the bundles
#23
Caspers crimp tool w/seals for about $30 can be had at most of the online shops.
http://www.casperselectronics.com/st...oducts_id=1334
Mouser for connectors -any and all..
www.mouser.com
All you need and you will never go back. I just buy lots of male/female pins. If I am splicing wires I cut the ends off and just use the 'crimp' part. When done right you cannot pull the wires apart. I have done the entire car this way converting an entire 4th gen wiring harness - extending, splicing, whatever. No problems and would not do it any other way. If it is good enough for GM it is good enough for me.
http://www.casperselectronics.com/st...oducts_id=1334
Mouser for connectors -any and all..
www.mouser.com
All you need and you will never go back. I just buy lots of male/female pins. If I am splicing wires I cut the ends off and just use the 'crimp' part. When done right you cannot pull the wires apart. I have done the entire car this way converting an entire 4th gen wiring harness - extending, splicing, whatever. No problems and would not do it any other way. If it is good enough for GM it is good enough for me.
Do not use this crap tool. Don't even waste your hard earned $$
You could buttcrimp but I usually dont do so with 18-22 gauge wires maybe larger gauge wire, just solder them and use about 1" length of adhesive heatshrink tubing. Only way I would butt crimp would be with quality terminals and GOOD crimp tool, and usually only a few wires like maybe a stereo head unit install not 100+ wires in a engine harness. Would be a huge bulge throughout the harness with butt connectors.
You need a micro pack crimp tool and terminals. This tool does not absolutely make GREAT crimps like factory in my opinion so I would crimp the terminal and just put a small lil dab of solder on there after the crimp. Its actually recommended with these style crimp tools from delphi to crimp and solder.
Or go all out and get the Rennsteig system, no solder needed.
$115.00 for the frame http://www.eficonnection.com/eficonn...spx?ItemId=893
$245.00 for the crimp die http://www.eficonnection.com/eficonn...spx?ItemId=895
Last edited by BOXCHEV; 08-10-2014 at 12:09 PM.
#24
TECH Enthusiast
Box Chevy have you even tried this tool? You are like lots of guys on the forum that like to spew incorrect info for their own benefit. Maybe you should try it before you waste your hard earned $$$ on the more expensive tool that does the same thing. If it didn't get the job done right I wouldn't have recommended it.
Last edited by 69 Ghost; 08-10-2014 at 02:01 PM.
#25
TECH Enthusiast
iTrader: (7)
Quote:
Originally Posted by 1320king View Post
besides cutting and repining the connectors this is my #1 option http://www.nspa.com/multilink.html
Ive used them many many times. great success with them.
Where are you buying them?
__________________
Yes, these look interesting...where can you buy them?
Originally Posted by 1320king View Post
besides cutting and repining the connectors this is my #1 option http://www.nspa.com/multilink.html
Ive used them many many times. great success with them.
Where are you buying them?
__________________
Yes, these look interesting...where can you buy them?
#26
Buy the correct J-tool on greedBay, sell it for nearly the same on greedBay when you're done with it. In effect it's an unlimited time tool rental.
The J-tools are repair not production tooling but for 99.999999% of people doing their own harness work they will be just fine. In untrained hands they are a lot better than the ubiquitous blue-handled universal tool. The biggest problem with the blue-handle tool is the tendency for the terminal to rotate as it's crimped. They also wear quickly. The J-tools don't have that problem.
Down the road I'd rather troubleshoot a bad termination at a connector than a harness with a bazillion hidden splices.
The J-tools are repair not production tooling but for 99.999999% of people doing their own harness work they will be just fine. In untrained hands they are a lot better than the ubiquitous blue-handled universal tool. The biggest problem with the blue-handle tool is the tendency for the terminal to rotate as it's crimped. They also wear quickly. The J-tools don't have that problem.
Down the road I'd rather troubleshoot a bad termination at a connector than a harness with a bazillion hidden splices.
#27
Box Chevy have you even tried this tool? You are like lots of guys on the forum that like to spew incorrect info for their own benefit. Maybe you should try it before you waste your hard earned $$$ on the more expensive tool that does the same thing. If it didn't get the job done right I wouldn't have recommended it.
My opinion of the tool is based upon searching/reading from others and overall general experience with other similar plyer type crimp tools. They are IMO inconsistent.
With a ratcheting crimp tool the crimp is the same everytime, no guessing if the terminal is fully crimped or not. You know the correct amount of force is applied because the tool will not release other wise. With a plyer type you don't have that. After 100+ terminals for a PCM Im sure their will be some disparity between them all when your hand starts feeling it a little and you are not applying the same amount of force for crimp #80 like you did when you started at crimp #1
Also have a read- http://www.eficonnection.com/eficonn...onQuality.aspx
#29
Which would make sense for them to crimp because you could probably train a monkey to use a ratchet crimp tool and terminal than to correctly splice.
I always see threads on various forums with people arguing that solder is inferior because Auto Manufactures require all wiring repairs to be done with crimp splice. Which I always thought the actual reason auto makers made this decision because it came down to time and money. Just simply faster and easier for a tech to be able to crimp then time to setup everything needed to solder and then the tech to actually know how to solder at that.
#30
TECH Fanatic
iTrader: (9)
Join Date: Aug 2007
Location: Rocky Mtn thin air & snow...
Posts: 1,237
Likes: 0
Received 1 Like
on
1 Post
That's probably a significant part of the reason for the crimp suggestion. I know that shortly out of high school, I worked as an electronics assembler working on DoD & NASA contracts, & we did a LOT of soldering - wires, components, you name it. I figure that if soldering can stand up to the rigors of combat or launching into orbit, well, then it should be able to handle just about anything that my car can dish out...
Of course, both have their place, & both are appropriate for different situations - you (obviously) wouldn't want to use solder when the connection might need to be disconnected/reconnected repeatedly, for example. Just depends on the intended application...
Of course, both have their place, & both are appropriate for different situations - you (obviously) wouldn't want to use solder when the connection might need to be disconnected/reconnected repeatedly, for example. Just depends on the intended application...
#31
TECH Veteran
iTrader: (4)
Not saying one is better than the other because I will do both. But what service manual says this? Just curious because I always hear people say GM currently states all wire repairs should be crimped for a splice.
Which would make sense for them to crimp because you could probably train a monkey to use a ratchet crimp tool and terminal than to correctly splice.
I always see threads on various forums with people arguing that solder is inferior because Auto Manufactures require all wiring repairs to be done with crimp splice. Which I always thought the actual reason auto makers made this decision because it came down to time and money. Just simply faster and easier for a tech to be able to crimp then time to setup everything needed to solder and then the tech to actually know how to solder at that.
Which would make sense for them to crimp because you could probably train a monkey to use a ratchet crimp tool and terminal than to correctly splice.
I always see threads on various forums with people arguing that solder is inferior because Auto Manufactures require all wiring repairs to be done with crimp splice. Which I always thought the actual reason auto makers made this decision because it came down to time and money. Just simply faster and easier for a tech to be able to crimp then time to setup everything needed to solder and then the tech to actually know how to solder at that.
#32
TECH Addict
iTrader: (22)
I use that tool on the harnesses I build, cannot tell the difference from my crimp and delphi's. The only bad crimps Ive had are when the terminal is loaded in the tool twisted, then its operator error, not faulty tooling
Back to the OP, solder splice is the best method. Think ahead where the harness will bend and move your joints somewhere else. My preferred joint is a modified linemans splice. Solder and shrink wrap
Since most swaps use a generic 2 1/2-3' of PCM length, you can start with a truck harness and trim 90% down, then crimp new PCM terminals on for a joint free harness
The only crimps I solder are heavy gauge (10-12ga) cable to an end ring/terminal because the crimp can be pulled free with some force. Ground/power rings, relay terminals etc. PCM/sensor terminals are just crimped. If you can pull the wire free of those smaller crimps without breaking the wire, then you didnt crimp it right
Back to the OP, solder splice is the best method. Think ahead where the harness will bend and move your joints somewhere else. My preferred joint is a modified linemans splice. Solder and shrink wrap
Since most swaps use a generic 2 1/2-3' of PCM length, you can start with a truck harness and trim 90% down, then crimp new PCM terminals on for a joint free harness
The only crimps I solder are heavy gauge (10-12ga) cable to an end ring/terminal because the crimp can be pulled free with some force. Ground/power rings, relay terminals etc. PCM/sensor terminals are just crimped. If you can pull the wire free of those smaller crimps without breaking the wire, then you didnt crimp it right
#35
8 Second Club
iTrader: (4)
Ebay, amazon etc... some you crimp first, then heat.
http://www.ebay.com/itm/25-Pack-Phillips-1-1862-14-16-AWG-Crimp-Solder-Shrink-Tube-Butt-Splice-Connector-/171057011662?pt=Other_Vehicle_Parts&hash=item27d3cadbce&vxp=mtr
No special tools other than a good heat gun with a tip similar to this.
http://www.ebay.com/itm/New-Master-Appliance-Proheat-Heat-Gun-Heat-Shrink-Adapter-35292-/251413636755?hash=item3a896ba693&item=251413636755&pt=Motors_Automotive_Tools&vxp=mtr
http://www.ebay.com/itm/25-Pack-Phillips-1-1862-14-16-AWG-Crimp-Solder-Shrink-Tube-Butt-Splice-Connector-/171057011662?pt=Other_Vehicle_Parts&hash=item27d3cadbce&vxp=mtr
No special tools other than a good heat gun with a tip similar to this.
http://www.ebay.com/itm/New-Master-Appliance-Proheat-Heat-Gun-Heat-Shrink-Adapter-35292-/251413636755?hash=item3a896ba693&item=251413636755&pt=Motors_Automotive_Tools&vxp=mtr
#36
I use that tool on the harnesses I build, cannot tell the difference from my crimp and delphi's. The only bad crimps Ive had are when the terminal is loaded in the tool twisted, then its operator error, not faulty tooling
Back to the OP, solder splice is the best method. Think ahead where the harness will bend and move your joints somewhere else. My preferred joint is a modified linemans splice. Solder and shrink wrap
Since most swaps use a generic 2 1/2-3' of PCM length, you can start with a truck harness and trim 90% down, then crimp new PCM terminals on for a joint free harness
The only crimps I solder are heavy gauge (10-12ga) cable to an end ring/terminal because the crimp can be pulled free with some force. Ground/power rings, relay terminals etc. PCM/sensor terminals are just crimped. If you can pull the wire free of those smaller crimps without breaking the wire, then you didnt crimp it right
Back to the OP, solder splice is the best method. Think ahead where the harness will bend and move your joints somewhere else. My preferred joint is a modified linemans splice. Solder and shrink wrap
Since most swaps use a generic 2 1/2-3' of PCM length, you can start with a truck harness and trim 90% down, then crimp new PCM terminals on for a joint free harness
The only crimps I solder are heavy gauge (10-12ga) cable to an end ring/terminal because the crimp can be pulled free with some force. Ground/power rings, relay terminals etc. PCM/sensor terminals are just crimped. If you can pull the wire free of those smaller crimps without breaking the wire, then you didnt crimp it right
When I started looking into crimp tools a lot of people told me to avoid that one so thats what I did.