J/B connector replacement

[marioinc]

Thanks for the reply and for offering the connectors you have, I appreciate it.
I realized, it would be better if I wrote WHY i need them, cause maybe there's an easier (and cheaper) way...

I want to connect an MCU to some things, like headlights, horn, door locks, etc, BUT it needs to be removable so no soldering or wire taps.

I was looking to make some sort of short 10cm "passthrough extension cable", plug in the original connector at one end, the other end in the J/B, and then solder the connections directly to the extension cables in between.
This way to go back, you just unplug the "extension cable" and plug the original back in, with no original wires cut or anything.
The only alternative I can think of would be to to the same but at the connectors between two wire harnesses... But the cost would probably be the same...

But again, it would probably cost too much since it's four whole connectors for just maybe 10 wires total...
I was thinking of connecting to a 4J (to ground headlights relay and high beams), 4S (for tail relay and hazards switch), 4H (for door lock/unlock), and maybe 4B or 4E to ground the horn relay...


Any ideas to make these connections, with the possibility to take everything out without any traces??
Any help is very much appreciated.