Watchman 7820-A Installation Manual Download Page 1

WOLO WATCHMAN MODELS - PAGE 1

Your purchase of a Wolo warning light is the perfect choice to compliment your vehicle. Wolo’s warning lights are 

manufactured with the finest materials. Before being packaged, each light is tested to meet our high standards 

and ensure a perfect working light. Our quality workmanship and components are Wolo’s assurance that this 

product will provide years of dependable service. If you need help or have any questions using your new Wolo 

warning lights, our technicians are available to answer your questions, Monday thru Friday, from 9 AM to 4 PM 

EST at 888-550-4676.
Before installation of the light bar is attempted, it is important to read these instructions completely. The lives of 

people are dependent on a proper installation of the light bar to the vehicle. The person installing this light bar 

must have advanced knowledge of the proper method for mounting and securing the light bar to a vehicle’s roof 

or exterior, as well as knowledge of the vehicle’s electrical system. Again, read this manual completely and note 

any messages marked “

IMPORTANT

” or “

WARNING’’. A safe installation will prevent serious injury or damage 

to the vehicle.

WATCHMAN comes completely wired and does not require any internal wiring by the installer. The power 

cable has all the required wires with factory installed terminals and connectors for a successful installation.

Installation of the WATCHMAN Light Bar requires drilling into the vehicle. The installer must carefully inspect 

both sides of the selected locations to ensure that there are no components, wires and/or any other vehicle part 

that could be damaged by drilling. 

IMPORTANT:

 Always de-burr any drilled holes, ensuring that there are no 

sharp edges. Install a rubber grommet into all metal holes that the wires are being routed through.
Always refer to the vehicle’s shop manual for deployment location of air bags. Never install the light bar’s switch 

control panel, wires and or components in the deployment area of any air bag. Improper installation could reduce 

the effectiveness of the vehicle’s air bag system and or project an object that could cause serious personal injury 

or death to driver and passenger. The user/installer assumes all responsibility to properly access a safe mounting 

location of the light bar’s control panel, to provide ultimate safety to the driver and passengers inside the vehicle. 
The vehicle operator and or maintenance department should inspect the light bar frequently to ensure all 

brackets are securely attached to the vehicle and that all mounting hardware is free of corrosion.

The light bar’s control panel should be mounted in a location where the switches can be easily reached. Never 

attempt to turn light bar on/off when driving under hazardous conditions.

These installation instructions should always be kept and stored in a safe location so that they can be referred 

to when information, maintenance or reinstallation is required.

Failure to follow all safety precautions and installation procedures outlined in these instructions could result in 

property damage to the vehicle, serious injury or death to you or others.

MOUNTING LIGHT BAR

1.  Position and secure the mounting brackets to the bottom of the light bar using the 

hardware pre-installed to the aluminum base plate.  Do not fully tightened the nuts 

because the brackets need to be positioned in step number 7. See Fig. 1.

2. 

Place the light bar on the selected location of the vehicle’s roof. A preferred 

mounting position on the roof is close to the B-pillar, which is the strongest part 

of the roof. IMPORTANT:

 Make sure the light bar is facing the correct direction. 

NOTE:

 there is a label on the light’s front lens indicating the take down lights.

3. 

Make sure the selected 

location of the light bar 

will allow the stainless-

steel straps to attach to 

the vehicle window ledge 

on both the driver’s and 

passenger sides. See Fig. 2.

Fig. 1

Front View

Fig. 2

Models 7820-A, 7825-B, 7830-R & 7835-BR

LED LIGHT BAR INSTALLATION MANUAL

TM

Summary of Contents for 7820-A

Page 1: ...ll the light bar s switch control panel wires and or components in the deployment area of any air bag Improper installation could reduce the effectiveness of the vehicle s air bag system and or project an object that could cause serious personal injury or death to driver and passenger The user installer assumes all responsibility to properly access a safe mounting location of the light bar s contr...

Page 2: ...steel strap will be secured to the vehicle is exposed Repeat the procedure for other side of vehicle 9 Remove the protective film covering the stainless steel straps Place one of the stainless steel straps into position on the window ledge so the installer can determine which holes in the stainless steel strap is best positioned to attach the L bracket using the bolts washers and nuts provided Ins...

Page 3: ... controller must be installed only in a location recommended by vehicle manufacturer If necessary consult manufacturer for their recommendation Failure to adhere to this warning could result in damage to the air bag and or reduce the effectiveness of the air bag which could result in bodily injury or death to you or others CAUTION Before drilling any surface for mounting of the switch controller o...

Page 4: ...G Carefully inspect the interior driver s area to make sure the light bar wires or the vehicle s electrical system wires are not interfering with the operation of vehicle s controls accelerator brake clutch pedals and etc 27 The cable s white plug is connected to its mate located on the back of the switch controller The plug is designed to connect only in one position NOTE The plugs locking tab is...

Page 5: ...haser for twelve months from the date of purchase that this product is free from defects in workmanship and materials If there is such a proven defect Wolo at its option will either repair or replace the item free of charge if it is returned to Wolo within twelve months from the date of purchase together with proof of purchase as described below Wolo reserves the right to inspect any defect prior ...

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