This installation is for a HO-Scale Intermountain A/B FT locomotive set using a TCS WOW121-Diesel Decoder, IB-MB2, and INT-SH3 WOWSpeaker Kit.

This install was performed by Don Borden and was written by TCS.


Important Soldering Tip:
Please do not use any flux either liquid or paste on the mother board. It will damage it. Use only Rosin core solder approved for electronics use.
We recommend to use only Kester "44" rosin core, SN63PB37, .015" diameter, part number 24-6337-0007.
This can be ordered from Techni-Tool under Techni-Tool part number 488SO157

http://www.techni-tool.com

These items are available in the WDK-INT-2 which was used for this installation.
IB-MB2 Motherboard WOW121-Diesel Decoder JST Speaker Harness INT-SH2 Speaker Kit
Click here for more information on the WDK-INT-2 and the rest of the WOWDiesel Kits line.

B-Unit_____________________________________________________A-Unit

HO-Scale Intermountain SD40-2 prior to TCS WOW121-Diesel Decoder, IB-MB2, and INT-SH3 WOWSpeaker Kit installation.

A-Unit______________________________________________________B-Unit

To start off this install, we must first remove the front coupler its housing on the A-unit only. Once that is complete, the shell will lift off of the chassis.

Do this by holding the fuel tank with one hand and lifting the shell off by pressing up underneath the end platforms with your other hand.

Removing the shell on the B-unit is done the same way as the A-unit however, the coupler does not need to be removed.

A-Unit________________________________________________________________B-Unit

With the shell off, we can now remove the factory light board. First disconnect the wire harnesses from the board.

Once the wire harnesses are loose, the factory light board can easily be unscrewed from the motor mount.

Make sure to hold onto the four screws as they will be used to secure the IB-MB2 back in place.

Next, remove the stock speaker and its housing. This, along with its screws will not be used.

A-Unit________________________________________________________B-Unit

Now with the factory light board removed, we can now mount and secure the IB-MB2 with the four screws removed earlier.

We can also screw down the INT-SH3 speaker housing kit.

Before screwing down the INT-SH3, make sure to solder the original speaker harness onto the new 28mm WOWSpeaker that came in the kit.

Additionally, some CA glue works great to keep it in place during the installation.

B-Unit___________________________________________________________A-Unit

With all three main components mounted, we can now close up the locomotive and reinstall the coupler assemblies.

Be sure to be mind full of wire routing and reassembly of the shell as to not damage or foul the installation.

You have now installed a TCS WOW121-Diesel Decoder, IB-MB2, and INT-SH3 WOWSpeaker Kit into your HO-Scale Intermountain A/B FT locomotive set.

Other solder tips: When stripping wire, only strip a tiny little bit of the insulation. Strip no more then a 1/64 of an inch. When the wire gets tinned with solder the insulation will shrink back more. Try to not expose any more wire then half the length of the solder pad at most. In no case should solder or exposed wire wire ever be outside the boundary of the the solder pad you are attaching a wire to.
Click here for important information on properly Stripping and Tinning wire

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