Wolo NEXGEN 8504 Series Installation Instructions Download Page 4

WIRING SWITCH CONTROL PANEL TO 12-24 VOLTS. Fig. F

WARNING: The power supply has an external 5-amp
fuse to protect its internal circuit. The 5-amp in-line
fuse attached to the red wire must be connected “AT A
POWER SOURCE” 
so to protect the wire connection
between the power source and power supply.
20. BLACK WIRE: Is connected to ground (-). Secure

the BLACK to the negative battery post or under any
metal body bolt. Make sure that the METAL surface
around the bolt that secures the wire is clean of rust
and paint so to make a good electrical connection.

21. RED WIRE: Is connected to 12-24 volts (+) positive.

Using the inline fuse provided, connect the red wire
to the vehicle’s fuse block or (+) positive battery
post. Remove fuse from the inline fuse holder until
all wiring is completed.

22. The plug with the YELLOW wire is connected to the power supply in the position marked “CONTROL’’.
23. The plug with the RED & BLACK wires is connected to the power supply in the position marked  

“12-24 VOLTS”.

24. Inspect all wiring and make sure all connections are secure. Install fuse back into the inline fuse holder.

INSTALLATION IS COMPLETE
Position the on/off switch to “ON“. Press and release the push button to change the light pattern.

PATTERN HEAD 

HEAD 

HEAD 

HEAD 

LED 

HEAD 

SEQUENCE

1 2 

3 4

1 STEADY

STEADY

STEADY

STEADY

ALL

2 STEADY

STEADY

DF 

DF 

CONTINIOUS

3 DF DF STEADY

STEADY

CONTINOUS

4 DF DF 

DF DF 

ALL

SF 

SF 

SF 

SF 

1&2 / 3&4 ALTERNATE

6 QF QF 

QF QF 

ALL

7 TF TF 

TF TF 

ALL

TF 

TF 

TF 

TF 

1&2 / 3&4 ALTERNATE

9 TF TF 

TF TF 

ALL

10 SF SF 

SF SF 

ALL FAST

11 SF SF 

SF SF 

ALL

12 

DF 

DF 

DF 

DF 

1&2 / 3&4 ALTERNATE

13 

SF-TF 

SF-TF 

SF-TF 

SF-TF 

3-SINGLE FLASHES THEN 3 TRIPLE FLASHES ALTERNATE

14 

SF-TF 

SF-TF 

SF-TF 

SF-TF 

3-SINGLE FLASHES THEN 3 TRIPLE FLASHES ALTERNATE

15 

STF 

STF 

STF 

STF 

1&2 / 3&4 ALTERNATE

DESCRIPTION OF LIGHT PATTERN

SF SINGLE 

FLASH

DF DOUBLE 

FLASH

TF THRIPLE 

FLASHES

QF QUAD 

FLASH

STEADY

NO FLASH

STF SLOW 

TO 

FAST

Fig. F 

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