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  1. MtnMan

    Dietz 7-40

    7-40 is the manufacturer’s model number. The other codes are SAE approvals. W3 means 360 warning lights, and 70 and 80 refer to the year. As Dan said, same light, but different decades.
  2. MtnMan

    Whelen CSP690 Xenon Bulbs to use?

    The tube shown in the pic has a trigger (the wire wrapped around the outside and connected to the center pin). You’ll need to identify the outer pins as the anode and cathode.
  3. MtnMan

    I've just discovered the ULTIMATE copy-cop

    Prison won’t be fun for him.
  4. MtnMan

    Whelen Alpha 12 siren amplifier

    I’m on it
  5. MtnMan

    Unitrol Sirens

    I believe that’s the Las Vegas Metro PD version.
  6. MtnMan

    Wanted Code 3 AS-8/AS-10 arrowstick

    Ok, what I have is a Code 3 halogen arrow stick, 47” long, 10 heads, aluminum frame. No model number that I can find. The end caps are missing, otherwise in great shape. Long cable, and I can provide a plug and/or controller. Lmk if you’re interested.
  7. MtnMan

    Wanted Code 3 AS-8/AS-10 arrowstick

    I think I have one...
  8. MtnMan

    RF interference?

    Well, the directions specify constant power, and the problem only occurs when you’re flipping the switch
  9. MtnMan

    RF interference?

    That appears to be the problem. Connect the power directly to the radio circuit, without a switch. It definitely does not sound like an RFI issue.
  10. MtnMan

    How can I make my light flash with one switch and steady burn with a second?

    A 1 or 2 amp diode would probably be adequate, but diodes are so cheap, you might as well go with 10A. The larger wire size will make easier and more durable connections.
  11. MtnMan

    Federal Signal 12 volt Vibratone Model 33

    @167 could you post a clear pic of the tag?
  12. MtnMan

    Code3 H2 Covert siren blowing fuses

    Try testing the speakers one at a time and check the speaker wiring for shorts. You have 4 AWG for the siren power feed (from the ignition)? It only needs 12 AWG wire / 20 A fuse.
  13. MtnMan

    Code3 H2 Covert siren blowing fuses

    What wire gauge and fuse size are you using for the siren power? One or two speakers?
  14. MtnMan

    Federal Signal 12 volt Vibratone Model 33

    Connect one wire to +12V and the other to -. Polarity doesn’t matter.
  15. MtnMan

    Federal Signal 12 volt Vibratone Model 33

    This is a vibrating diaphragm mechanism. No motor.
  16. MtnMan

    Federal Signal 12 volt Vibratone Model 33

    Is it labelled for DC power?
  17. MtnMan

    Power plug help.

    Looks like a Molex Mini-Fit Sr connector. The 4 position plug housing is Molex part 42818-0412 and 10-12 AWG crimp terminals are Molex 42815-0114.
  18. MtnMan

    Reducing Speaker Volume for Siren Testing

    I re-posted a wiring diagram above. Each L-pad has terminals numbered 1, 2, and 3. The #1 terminals are connected together, the #2 terminals go to the speaker, and the #3 terminals go to the siren output.
  19. MtnMan

    Dual Federal Sign and Signal PA-1 sirens

    Just a pair of PA-1s in for repair.
  20. MtnMan

    Vintage Aurora, CO police highriser setup

    Cool. I'm guessing "aerodynamic" and "lightweight" didn't enter into the design spec.
  21. MtnMan

    Hands Free/ Horn Ring wiring questions

    In that case, it sounds like you did everything right, and you can ignore my suggestion above. The other possibility is a fault in the SSP3000. If you got it used, a previous user might have overloaded the horn transfer circuit and caused a sticking relay.
  22. MtnMan

    Touchmaster Amplifier

    I'm not aware of any major design changes when FS took over Unitrol, so I think the amp circuit boards would be interchangeable. As for the PA-only version (like the one that just sold on eBay), again I think the circuit board would be the same. The question is whether Dunbar-Nunn reprogrammed...
  23. MtnMan

    Remote Siren w/PA?

    Unitrol 80K (find them cheap on eBay) Whelen Beta Series
  24. MtnMan

    Hands Free/ Horn Ring wiring questions

    The 5A limitation means you don't want the entire horn operating current running through the SSP3000. If you tapped into the horn circuit before the factory relay, you should be OK, with no need to add an additional relay. As for troubleshooting the intermittent horn issue, make sure the white...
  25. MtnMan


    The Power Call siren was designed to have customizable tones by substituting caps and resistors in the oscillator circuit. There's a page in the manual that describes ranges of values for R36, R41, C9 and C10. So, it's possible that that your siren was intentionally modified, or it could just...
  26. MtnMan

    Unitrol 480K 15 Pin Connecter

    The wire marked PUSH1, connected to pin 4, gets +12V from the IGN source when the rocker is pushed to the right (momentary) position. I believe this was intended for a gun lock function. When the rocker is clicked to the left position, it cuts out the brake and backup lights.
  27. MtnMan

    Realigning a misaligned slider switch

    Probably a bent tab or loose mounting hardware. Should be evident when you open it up.
  28. MtnMan

    Horn ring switch / momentary switch question

    Connect the HORN RING wire to your existing momentary switch and leave the HORN wire unconnected. The PA300 will work with either positive or negative input polarity.
  29. MtnMan

    Whelen tactlD1 supplying code 3 020745 narrowstik

    This should work: Whelen - Code 3 1 BRN - BRN 2 RED - ORN 3 ORN - TAN 4 YEL - VIO 5 GRN - GRN 6 BLU -GRY 7 VIO - YEL 8 GRY - BLUE 9 WHT - RED, RED/WHT (+12V)

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