Thunder Heart Performance Corp. 615-672-8811 www.thunder-heart.com
12 EI4250
Three-terminal switches such as the dimmer switch must be wired as shown
for proper operation.
I am not using a “kill” switch. How do I wire the right handlebar
harness?
You must use a “kill” switch. The kill switch is an extremely important safety
device and should never be removed from the bike.
Why does my headlight work, but not the turn signals?
You may have a missing ground connection. The EHC must be grounded
through the right handlebar connector using the supplied black wire to a good
chassis ground.
What if I am using handlebar controls from a 1996-2003 motorcycle?
Different wire identifications were used on 1995-and-earlier motorcycles than
1996-2003 motorcycles. See Section 2.3 and Appendix D for more
information.
APPENDIX B OPTIONAL AND REPLACEMENT PARTS
Table 2—EHC Optional and Replacement Parts
Component
Thunder Heart
P/N Notes
Starter Relay E2206 Also available at most auto parts
stores under Ford P/N F5TZ-14N089-B
EHC Module EA4200 Replacement
LED Indicator Panel (custom bikes) EA4088 Optional
Incandescent Lamp Indicator Kit (95-earlier H-D) EA4091 Optional
LED indicator Kit (96-later H-D) EA4091-96 Optional
16" Indicator Cable E4145 Included with RSE4088
72" Indicator Cable E4145 Optional
APPENDIX C TROUBLESHOOTING
SYMPTOM POSSIBLE CAUSE SOLUTION
Turn signal flashes rapidly LED Turn signal burned out or defective Replace LED bulb assembly
Turn signal not wired correctly Correct wiring per instructions
Poor connection Fix connection
Bike does not start Dead battery Charge Battery
Faulty Starter Relay Replace Starter Relay