FBO Systems HRR688 Performance Ignition Kit

This Ignition kit is a direct replacement for all Chrysler single pick-up Electronic Ignition Systems or a conversion from Points Type Ignition.

3 Years from Date of Purchase
If the HRR688 should fail for any reason other than intentional abuse, misapplication or incorrect installation.

FBO Systems warrants the HRR688 Ignition boxes to be free from defects in material and workmanship under normal use and if properly installed for a period of three (3) years from date of purchase. Coils are covered under Warranty for 1 year.  If found to be defective as mentioned above, component will be replaced or repaired if returned prepaid along with proof of date of purchase (we will maintain purchase records for 5 Years). This shall constitute the sole remedy of the purchaser and the sole liability of FBO Systems to the extent permitted by law, the foregoing is exclusive and in lieu of all other warranties or representations whether expressed or implied, including any implied warranty of merchantability or fitness. In no event shall FBO Systems be liable for special or consequential damages. This warranty is only valid on products purchased from FBO Systems and their Authorized Dealers.

Cap and Rotor are warranted against defects and workmanship on delivery and should be part of your regular routine maintenance schedule. 

It is the sole responsibility of the purchaser to determine the compatibility of these components to his/her application.  


This is a direct replacement kit and should plug directly into your existing wire harness with no modifications.
It is imperative that the module case be grounded securely to the body, the module is grounded through the case.  Failure to secure a good ground on this unit will cause failure of the Micro Processor and void your warranty.  Clean the chassis mounting points to bare metal to ensure a perfect ground.  If in doubt add a 12g wire to the mounting screw and run it to a clean ground.  The engine must be grounded through a correct and large enough strap to the chassis to insure correct grounding.  You must eliminate the ballast resistor either by soldering the wires together or using our jumper wire kit. If the LED does not come on steady within .5 seconds of ignition switching on -Check Ground.

If in doubt or you have any questions regarding this system call 541-942-5920 for technical assistance.

Do not attempt to run this ignition system with an aluminum contact distributor cap, cap and or rotor failure will occur.

4 Pin Vs. 5 Pin…. all replacement modules for Chrysler Ignition systems use a 4 Pin connector.  The older style 5 pin connector just plugs into the 4 Pin Module.  Except Dodge Trucks with the Heavy Duty Emissions Cycle Carburetor with Electronically Controlled Vacuum Kicker. Which is not the correct application for the FBO Ignition system.

Plug Gap guidelines:      8:1 to 9.5:1 Compression .040-.042
            9.5:1 or greater .038 to .040

**Racing Plugs are totally different consult with manufacturer for correct gaps.

Warning: Incorrect plug gap or heat range can cause detonation

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