The rubber boots at the FI components need the rubber boots to protect the wiring and connection from heat, water and dirt accumulation. Exposed wires don't last long. There are 4 different boot sizes 2P, 3P, 4P, and 5P. I have looked everywhere for the the original style boots and as far as I can tell, the original style boots are no longer made. If they are to be found, they are likely limited NOS stashed away in a dealership somewhere, I have searched everywhere without luck, certainly nothing that is available on a continual basis.
I use rubber boots in a newer style that are very durable and obtainable, but only in larger quantities and with long lead times. I use these new style boots on my rebuilt harnesses and they are a major cost of the rebuilt harness.
There usually is very little one can do to 'revamp' a ratty harness. Any exposed wires usually are quite brittle and the special wire terminals break off. After extensive searching, I have all the correct OEM or better parts. I repair original FI harnesses to a functional condition and rebuild harnesses using all new parts. Unless your harness just needs a minor little tune-up, its usually cheaper to trade it in as a core harness and get a rebuilt harness.
I have several rebuilt harnesses ready to ship, as well as a few reconditioned ones, depending one which year/model engine you have.
Let me know if I can help you further.
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