Is there such a thing as a 'good' T-splice?

I'm creating a loom for my kit car, and my BCU comes with nice long 4m wires that comfortably reach the rear end.

Some of them need to be split for front and back - indicators, side / tail lights, that sort of thing.

It seems wrong to cut a perfectly good wire and then join it back to itself in a splice! But I know those T-connectors and scotch-lock type gadgets are baaaad. Is there a way of stripping the wire and crimping a splice to it without cutting it?

I think you should cut and splice -- that's the best way, and you can cover the splice with adhesive-lined heat shrink tubing instead of tape. You could probably use an open barrel crimp to do this without cutting. One of the video's here suggested them, and here is what they look like:

https://www.bmotorsports.com/shop/product_info.php/cPath/109_122_137/products_id/5829?osCsid=viaroorbpr8lt1l0eflbb2a5e6

I have used the Posi-Tap devices for the occasional CAN bus connection, and they have worked fine.

https://www.posi-products.com/posiplug.html

Thanks David - that was what I expected, it just feels so wrong to cut a perfectly good wire and splice it back together again!

Yeah, I do this a lot. 100% a good approch.

I often just strip back some insulation, perform a military splice, and *gasp* solder (because it's actually fine and outlasts the car, contrary to myths... anyway), been doing this for years, and it works well. If you plan out the assembly of the harness, you can slide the heat shrink over the wire before making the connection to insulate and seal the connection with the heat shrink and not use tape. This is where planning out the splices will be paramount. Yes, you could use open barrel splices instead of soldering, if you're more comfortable with that, but still stripping the wire back and wrapping the wire or doing a military splice.

I'm like you, I like to have one solid piece of unbroken wire from one end to the other when possible and prefer to splice into the wire, instead of cutting it.

Cheers Chris, that makes sense - how do you strip the wire?

I use "automatic strippers".

These aren't the same as mine but the same idea. https://www.amazon.ca/TESMEN-TWS-322-Adjusting-Non-Contact-Electrical/dp/B0CM9BVYD5/ref=sr_1_1_sspa?dib=eyJ2IjoiMSJ9.1sh7JKmhA6-SuUqVB_ONWid7UlbYnRE4J1ijSzyuMaYrT1Ki44M2HOi-gG3AD1PsivriZ1goinPKZ9fqjfuLf0ATyAJWpsjQOXNIveqUvmENRrlVH0h4-GBHHteS77OJoF371wyEI96RM8yaeOJN9vxQFQCSioZ796kFMfh5yM1pxbfvmPAPMmthIOrJ8kP810X1TROhsnvC5frNEZ3DyLS6GW4BGh9NLtEgVNgv9zVd6DnkNhaKqmMeYLaTWhQpi4R1356ZmAOY1bVRZZZPt3H0ydJPD5gvv0pU6kc5380.qwoa3QjWNOCMPKTEbiulPlIPkOBp9HTKHSqwqJlX5qs&dib_tag=se&hvadid=678437248477&hvdev=c&hvlocphy=9001042&hvnetw=g&hvqmt=e&hvrand=6023475546009175703&hvtargid=kwd-296601532443&hydadcr=27151_14704622&keywords=automatic+wire+strippers&qid=1722905459&sr=8-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1

You can also use the other style that cuts into the insulation, like is seen in the videos from HPA, just need to be more careful of the cutter portion not nicking the copper.

Thank you! I've never tried using a tool like that on the middle of a wire, I'll have a go. Cheers Chris!