What do you want to do here? You can buy the plastic loom and repair any that's damaged or missing. Parts Express has the loom fairly cheap, and Del City sells the loom and the corners/branches. There's no need to clean the inside of the connectors, unless you remove individual wires and need to replace them. Even then, you may do more harm cleaning than any benefit. To clean the outside of the connectors, use a plastic-safe contact cleaner in a spray can. Whatever you use, carefully test it on the plastic to make sure it does no harm.
I would mention - the dirt and oil under the hood doesn't really hurt anything. Suggest you don't get carried away and damage something for aesthetic reasons.
Not certain about an '88 or later, but the bulkhead connectors I've seen are a part with the fuse panel on the inside of the firewall. You can take the whole fuse panel loose with some long socket-head screws and remove the whole wiring harness from under the dash. I don't think you can easily separate the interior bulkhead connector from the fuse panel.
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, Destination ATs, 7600 GVWR
Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
GTI without the badges: '95 VW Golf Sport 2000cc 2D
ECO Green: '15 FCA Jeep Cherokee KL Trailhawk
Last edited by tgreese : 09-30-2022 at 09:36 AM.