1.

A Terminal= TS S/W Right

B Terminal= Brake S/W

C Terminal= L Brake Load(TS Lift back load)(LED Lamp)

D Terminal= R Brake Load(TS Right back load)(LED Lamp)

E Terminal= Battery(Negative)

F Terminal= TS S/W Left

G Terminal= H.W. S/W

H Terminal= T.S. Left Front Load

J Terminal= T.S. Right Front Load

K Terminal= Battery(Positive)

2.It's a lighting control module

**Shell Construction: Plastic

**12v 25w 2/6 Lamps  Brake Lamp Control(LED Lamp) Max 6 Lamp

**Time To First Flash: Less Than 1.5 Seconds

** Rated Voltage: 11 to 15 Volts DC 
** Temperature Operating Range : -30∘C to 80∘C

** Voltage Drop at Rated Current : 500mv

** Duty Cycle: 35% to 75%

** Time Flash : 60-120c/m

This LED relay can be installed in most cars, trucks, and SUVs. It will be 100% plug-and-play. 

*Strong & durable  plastic

*Fit for most vehicles brands

*Meet OEM quality

*Easy to install

*Long-lasting and high performance

*In-depth service

This relay fixes following symptoms: 

-The turn signal and hazard warn hyper flash 

-The LED bulb will not blink or blink too fast 

-Bulb burnt out warning on the dashboard...etc

The module can control all the lighting functions in your automobile.

Fit For:

2003-2006 Silverado 1500,1500HD,2500HD,3500

2002-2006 Suburban 1500,2500

2003-2006 Tahoe,

2003-2006 Sierra 1500,1500HD,2500 HD,Sierra 3500

2003-2006 Avalanche 1500 2500

2003-2004 Sierra(Silverado)2500

2007 Sierra(Silverado)1500 Classic, 1500HD Classic, 2500

2003-2006 Yukon, Yukon XL 1500, Yukon XL 2500

2003-2006 Escalade, Escalade ESV,EXT

2003-2007 Hummer H2