gsrhatch95

Please PM me if ya know the correct way to do this....i would GREATLY appreciate it

My car is obd2 and was turbo with obd1 injectors so the wires were cut...i have a stock obd2 rail and injectors with clips so do i solder the wires or are they just spliced and heatshrinked?

wrx-killer-Sti-eater

iTrader: (1)

Solder and heat shrink

FF for Life

Always solder and heat shrink, splicing leaves to much room for things to wrong

fcm

Ditto both the above, solder and heat shrink. 94

Wrona

Solder and heatshrink best way to do it and the safest

el crapitan

^^granted that you know how to solder properly. otherwise, cold solder joints are much worse than butt connectors.

i know everyone always says solder is best. but tbh, using the correct sized butt connectors and a ratchet type crimper yields excellent results. IMO, they both work great. as long as either is applied correctly

gsrhatch95

yea i can solder pretty good but it seems the butt connector might be the easiest way ...if its reliable...thanks for all the answers

dpetro1

butt connectors are gonna look terrible though, they are bright colors and bulky. and it probably takes longer to crimp 8 butt connectors (16 crimps) than to just run through and solder the 8 connections.

solder/heat shrink gets my vote

thewrai6th

Butt connectors look like crap, can come disconnected, corroded and cause higher resistance in the circuit.
With that said, I use butt connectors without problems :0
I switch the injectors out to get smogged, so it made sense to me. I used to have them soldered.

mike703

hmm why not go for something in the middle. like butt connectors then heat shrink them if you dont want to solder. that eliminates all of the downsides to them except for user error.

VIPteg88

butt connectors will ohm out you ECU and blow i think its grid 22 or 23 in the ECU. and is spliced you could be on you way home from work at 11pm at night and you car start runnin on 3 cylinders and make it impossible to drive.

Not that i speak from experience or anything lol

mike703

The only way to "ohm" anything out is with a multimeter. case and point...and do you even know what an OHM is??? the only way for the resistance to get that high is if there is a short were talking about adding butt connectors not resistors. good lord. and if he correctly uses the butt connectors and then heat shrinks them they should NEVER come un done thus eliminating the 3 cylinder situation you speak of.

DOHCDAN

Deffinitly solder then heat shrink afterward.
I used to hate soldering wires.. until i went out and bought myself a nice weller soldering iron. One of the most useful things i've bought for under $20. Soldering goes by so quickly now

fcm

Butt connectors should never be used anyplace moisture can get to the connection, it makes no diff. how good the butt connector is or how good you crimp it, if air/moisture can get to a connection that has current passing through it, it will oxidize, [corrode] given enough time.

A soldered connection will prevent that.

We get **** about wiring connections at our shop, and we do a lot of them.

The best way to make a connection between two wires is the strip 1/4" or so off each lead end, spread strands apart a little on both leads, push ends together, and using 1 strand of good cooper wire, tightly wrap it around the the "bundle" of wire strands so they "pack" together tightly, solder, slip a 1/4" piece of shrink tubing over the exposed, soldered, wire bundle and shrink it, slip a second piece about 3/4" over the connection, centering it, shrink it, your done, you have a bulletproof connection that will never fail, and it will look pretty good, no big lump.

I think it is time to do a DIY solder connection tutorial, "Soldering The Correct Way". 94

mike:

If you want to use butt connectors I would suggest non-insulated butt connectors with heat shrink, or if you already have them use regular butt connectors and with a straight edge/razor/box cutter cut the insulation off and then heat shrink to avoid problems with moisture

el crapitan

there is a quality grade way of repairing using butt connectors, and it's not with the shitty poly shielded ones and side cutters. that's backyard garbage.

this is how you repair using butt connectors. with a ratchet type crimper, non-shielded connectors of the correct gauge, and heat shrink. the heat shrink forms the seal. it's heated to the point that glue starts to push outward. the glue is critical, as this is where the seal is formed.

i don't think you know what the hell you're talking about.

a short will lower resistance, not raise it

i know you're an experienced auto electrician, and an asset to this site, but i have to disagree. i believe that butt connectors CAN be as much of a quality repair as soldering. as long as, like anything, the proper care is applied.
the heat shrink still seals the bare connection. there should be no issues with corrosion. i do, however, have to agree about the lumpy wiring. no way around that really

fcm

We will use uninsulated butt connectors when more then 2 leads are joined, [sometimes] crimp then solder, [sweat].

Put liquid electrical tape over connector, one layer of shrink tube, [enough to cover the connector] second layer of shrink tube covering connectors and wire insulation ends.

Shrink tubing by itself is not air/moisture tight, the liquid electrical tape will take care of that, you can even buy shrink tubing with a heat activated, sealer, if you do not mind paying for it, the liquid tape is much cheaper and just as effective. 94

el crapitan

isn't the glue the sealer that you're referring to? i thought most heat shrinks had that

fcm

There are many kinds of heat shrink, some can cost more then $5 a foot.
I get the same result with $0.25 a foot shrink tubing and liquid electrical tape. 94

wrx-killer-Sti-eater

iTrader: (1)

Sorry. I would never tell anyone to butt connect a injector wire. Why most people are going to use some cheap connectors. Do not have a good crimping tool. The ecu fires the injections with a low current ground. So a bad crimping will cause issues. Miss firing, injector duty and noice,poor performance. Seen this way to many times on the dyno and customers cars. You show me any true racer or tuner that has crimped injectors.