LED turn signal prob's AFTER load EQ install

I'm having a fast-flash issue w/ my JamStrait (Jam Strait) 3157 White, Hyper-Bright bulbs. I have installed one "625-LE" on each (four total) of the brake/turn lights on the rear of my 1999 Ford Crown Vic But, the fast flash continues. Also, it is VERY difficult to tell whether the the turn signals are flashing-- that is, there is very LITTLE difference between the brightness of the parking / running lights and the turn signal flash. The LE's ARE getting hot while in operation.

When I turn on the hazard lights, the fast-flash condition is no longer present. I have tried connecting the ground(s) to a wire, wired to the chassis, close to the rear turn signals-- I've also hard-wired / soldered the connections (not using the squeeze connectors that come w/ the EQ's). . . . . They're still fast-flashing, w/ a dim-flash. Would 650-LE's work, since the 625's apparently are not helping? If so, will wiring two 625's together be the same as using one 650 (just to test the issue, before buying four 650's)?
JamStrait phone tech support said that it sounds like I'm doing everything right, and they have no further advice(???!!!)
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LovelyWendie (http://www.lovelywendie99.com/)

You might have it wired incorrectly. The resistor should be connected between the turn signal and ground wires.

I'm not familiar with the resistor part numbers but I'll guess that the "625" means it is a 6-Ohm, 25 Watt resistor. Doing the math for a 6 Ohm load @ 12 V, it translates to a 24 Watt draw through the resistor...pretty high. If you have more than one bulb that are flashing, then you may need a lower Ohm resistor. Refer to this nice little diagram:

http://www.plasmaled.com/tail_light_led_bulb_fix.htm