Spare wires?

[Jim Blackwood]

Are there any spare wires in the harness of the D series MCI buses? I need on more wire for the diagnostics on the new Esper controller.

Jim

[jraynor]

Are there any spare wires in the harness of the D series MCI buses? I need on more wire for the diagnostics on the new Esper controller.

Jim

I would say go to MCIs website and go to technical and there are some links that take you to their manuals. From there you should be able to find the wiring schematics for your bus. Download for free

[TomC]

I installed extra wires. I bought 5 50ft 3 wire extension cords of different colors. Tied them together and ran them from the engine compartment to the driver's compartment. Course, I have a transit bus which makes running the wires relatively easy. Now I have 15 extra wires for whatever. I've used 2 for the tachometer, 2 more for cruise control. Can add more gauges. Good Luck, TomC

[richard5933]

Not sure if MCI did like GM in this regard, but I've got about half dozen blank terminals in the driver's compartment which terminate in the engine bay compartment as folded & taped wires. Same in the other direction - about half dozen that start in the rear and terminate in the front folded & taped.

If you have any folded/taped wires put a trace signal on them and see where they go. If not, find an empty terminal in either the driver or engine compartment panels, put a trace on it, and see if there is a corresponding blank terminal on the other end.

I'm sure that you know this already and were looking for someone with the specifics for your model, but I thought I'd spell it out for the newer guys that may be reading this and didn't know that there are often spare/blank wires running fore & aft from the factory (usually for uninstalled options or for customer-installed options.)

[jraynor]

I installed extra wires. I bought 5 50ft 3 wire extension cords of different colors. Tied them together and ran them from the engine compartment to the driver's compartment. Course, I have a transit but which makes running the wires relatively easy. Now I have 15 extra wires for whatever. I've used 2 for the tachometer, 2 more for cruise control. Can add more gauges. Good Luck, TomC

I hope these wires are not packed in the wall or anywhere that air can't circulate around them. Extension cords have to have air to keep them cool. Or else they will burn in half. That is why extension cords are cheap and are not rated for in wall installation

[chessie4905]

From what he has said, none of the items are 110 volts. Just gauges, tachometer, etc, at 12 or 24 volts. None of these applications is going to be a concern for him. As long as the wire coverings don't degrade and crack over time.