Bulk central

[Jesco]

Hi,
The bulk central in the engine compartment, is it possible to change it from the engine compartment? Or must I doing any work from the dash side?
I hope it's only to remove the connectors from de bulk and then remove the old bulk head/centrel and change it to the new one (from the engine compartment side)... 

[Ghoste]

On the engine side, the connectors unplug from the bulkhead and those same connectors are part of the underhood wiring harnesses.  To change the other half of the bulkhead connector, it will have to be pushed through to the passenger compartment, after unplugging the underhood wiring harnesses, as that half of the bulkhead connector is tied in with the underdash wiring harness.

[Jesco]

You cant pull out the half of the bulk central who is in the engine compartment from the engine side then? Whitout messing with the under dash wiring and the side of bulk central under dash...

[Ghoste]

Yes.  It's just a connector that happens to be fastened to the firewall.  One half of the plug is on the engine side and one half is to the dash harness.  It just happens that the way it is fastened to the firewall, means that both halves are "located" on the engine side.  They separate there and if you want to remove it completely from the firewall, then after separating the two halves, the portion which is attached to the dash harness, would have to be pushed through the firewall into the passenger compartment.

[Jesco]

Think I understand, thanks a lot.

I am working with rewiring  and was thinking to clean the bulkcentral (engine side). Remove it and clean it in some fluid.

[Ghoste]

Great idea and I do it myself once a year.  Easiest way is to just unplug the connectors from the engine side, squirt some contact cleaner in there, get an old toothbrush and just scrub away.  Then use a dielectric grease of some kind in there before plugging the engine harnesses back in.

[Jesco]

I have not decide to do wiring myself or buy ready harnesses...