Keep Alive® Wiring Diagrams

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Keep Alive® Compatibility

This article only lists decoders manufactured by TCS.

This article only lists decoders which do not include Keep Alive on-board, such as the "KAM" and "KAT" series decoders.

For information on general decoder compatibility with Keep Alive, please see our main Support Article.

Keep Alive® Wiring Diagrams for Non-Sound Decoders

HO-Scale Non-Sound Decoders

"A" Series

Decoder Name	Hardware Revision	Diagram
A1	DISCONTINUED	Not Compatible
A4X	2013-Present	Click to Enlarge
A6X	2013-Present	Click to Enlarge
AS6	(All)	Click to Enlarge

"DP" Series

Decoder Name	Hardware Revision	Diagram
DP2X	2013-Present	Click to Enlarge
DP2X-UK	2013-Present	Click to Enlarge
DP2-LL	2013-Present	Click to Enlarge
DP5	2013-Present	Click to Enlarge

"FL" Fleet Lighter Series

Decoder Name	Hardware Revision	Diagram
FL2	2013-Present	Coming Soon!
FL4	2013-Present	Coming Soon!

"LL" Life-Like Series

Decoder Name	Hardware Revision	Diagram
LL8	2013-2022 (Rev1)	Click to Enlarge
LL8-LED	2013-2022 (Rev1)	Click to Enlarge
LL8	2023-Present (Rev2)	On-board "KA-P" connector Click to Enlarge
LL8-LED	2023-Present (Rev2)	On-board "KA-P" connector Click to Enlarge

"M" Series

Note: Decoder Name includes all variants such as "P-1"
Decoder Name	Hardware Revision	Diagram
M1	2012-2022	Click to Enlarge
M1-T	(All)	Not Compatible
M4	2012-2022	Click to Enlarge
M1	2022-Present	Keep Alive wires factory-installed
M4	2022-Present	Keep Alive wires factory-installed
MC2 MC4 MC6	2013-Present	Click to Enlarge

"T" Series

Note: Decoder Name includes all variants such as "P-1"
Decoder Name	Hardware Revision	Diagram
T1	2012-2023	Click to Enlarge
T1-LED	2012-2023	Click to Enlarge
T4	2012-2023 (Rev2-3)	Click to Enlarge
T4-LED	2012-2023 (Rev2-3)	Click to Enlarge
T4	2023-Present (Rev4)	Click to Enlarge
T4-LED	2023-Present (Rev4)	Click to Enlarge

Miscellaneous Decoders

Decoder Name	Hardware Revision	Diagram
EU821	2012-Present	Provided through Motherboard Click to Enlarge
G8	2012-Present	Coming Soon!

Z-Scale Non-Sound Decoders

Z-Scale Decoders

Decoder Name	Hardware Revision	Diagram
AZL4	All	Click to Enlarge
AZL1D4	2022-Present	Click to Enlarge
AZL2D5	2024-Present	Coming Soon!
Z2	2012-2023	Click to Enlarge
Z2	2023-Present	Click to Enlarge

Keep Alive® Wiring Diagrams for N-Scale Drop-in Decoders

Atlas N-scale Drop-in Decoders

Atlas Drop-In Decoders

Decoder Name	Hardware Revision	Diagram
ALD4	2013-Present	Coming Soon!
AMD4	2013-Present	Coming Soon!
ASD4	2013-Present	Coming Soon!
MP15-N	2013-Present	Coming Soon!
VO-1000	2013-Present	Coming Soon!

Classic N (CN) Decoders

Classic N (CN) Decoders

Decoder Name	Hardware Revision	Diagram
CN	2013-Present	Coming Soon!
CN-GP	2013-Present	Coming Soon!

KATO N-scale Drop-in Decoders

KATO Drop-in Decoders

Decoder Name	Hardware Revision	Diagram
K0D8	2013-Present (All Variants)	Click to Enlarge
K1D4 / K1D4-NC	2013-Present	Click to Enlarge
K2D4	2013-Present	Click to Enlarge
K3D3	2013-Present	Click to Enlarge
K4D6	2013-Present	Coming Soon!
K5D7	(All)	Coming Soon!
K6D4	(All)	Click to Enlarge
K7D4	(All)	Click to Enlarge

Miscellaneous N-Scale Decoders

Misc. N-Scale Drop-in Decoders

Decoder Name	Hardware Revision	Diagram
EUN651	2013-Present	Coming Soon!
IMD4 IMD4-W		Coming Soon!
IMF4 IMF4-NF IMFTA4 IMFTB4		Coming Soon!
IMFP4 IMFP4-NF		Coming Soon!
L1D4	2013-Present	Click to Enlarge
MT1500	2013-Present	Coming Soon!

Keep Alive® Wiring Diagrams for WOWSound Decoders

WOWSound Version 4

Decoder Name	Diagram
WOW101	Provided through WOW-AUX Plug Connector Click to Enlarge
WOW121	Provided through Motherboard Click to Enlarge
WOW501	Keep Alive® On-board