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How To Easy TRACER MOD for SPLATRBALL GUN SRB400 GEL BLASTER for Glow In The Dark gel balls

This tracer mod for the SPLAT-R-BALL SRB400 is cheap and easy for awesome glow-in-the-dark fun.


▶ 3mm UV LEDs:

▶ 220 Ohm Resistor:

▶ Wire with JST connectors (I recommend using this instead of plain wires):

▶ Wire: or

▶ Heat Shrink Tubing:

▶ Black Medium Thick Rubber Toughened Super Glue (To glue nuts to the shell interior): (Starbond Premium) or (BSI Brand)

▶ Thick Super Glue: (Starbond Premium) or (Gorilla Brand)


▶ Cheap, but good enough for this soldering iron -

▶ Nice, but more expensive 75 Watt Soldering Iron Station - - Watch my video about this soldering iron -

This mod is much cheaper than tracer units (not to mention that a tracer unit won't work on the Splatrball blasters), and is powered off of the blaster battery, so you don't need to worry about charging yet another device. It uses a simple, cheap UV LED, a 220 ohm resistor (for 2s 7.4V battery), and some wires. Wires with a connector are better, because it will make it easier to service the blaster in the future. Very simple to DIY for fun nighttime play.

Read this page with a lot more maintenance info, mods, and replacement parts:


▶ Glow In The Dark Gel Balls: (GelStrike is the only brand I have found that works in mag fed blasters)

▶ SplatRBall SRB1200 Kit (Shown in this Video):

▶ SplatRBall SRB400 Kit (Orange, With Stock):

▶ SplatRBall SRB400-SUB Kit (Blue, Without stock):

▶ Gel Blaster SURGE (Watch the other tracer video for this one) -

▶ SplatRball 20K Orange Ammo -

▶ SplatRball Blaster 400 Round Capacity ORANGE Magazine -

▶ SplatRball Blaster 400 Round Capacity BLUE Magazine -

▶ SplatRball Blaster 1800 mAh Rechargeable Battery with Charging Cable -


▶ Products we make:

▶▶ Amazon Store:

▶ Engineering:


▶ Instagram:

▶ Facebook:

00:00 Splatrball SRB400 Tracer Mod Intro

01:18 Glow in the dark gel balls - Gel Strike bran

01:36 Parts List

03:31 Tools Needed

04:33 How To Take Apart the Splatrball SRB400 blaster

04:45 Mark UV LED drill hole locations

05:25 Drilling the Splatrball SRB400 T Piece

06:57 Test fit UV LED

07:08 Trim UV LED tip (optional)

08:17 Wiring and Soldering UV LEDs

09:46 Connect wires to Mag terminals

10:59 Trim T-Piece cover to clear LED

11:29 Testing the UV tracer LED before reassembling the blaster

12:11 Glue UV LEDs in place

12:27 Put the Splatrball SRB400 gel blaster back together

13:09 Testing the glow gel ball tracer unit at night

#splatrball #gelblaster #orbeez

The products shown here were purchased by me with the intent to use them. I did not receive any free items, and I am not being paid or compensated for this review. The video, description, and comments may contain affiliate links. If you click on a link, I may receive a commission. Money earned helps to support my channel and bring you more informative videos about engineering, crafting, and DIY.

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