stvsem

i installed an MSD 6A on my 94 cobra. when it's (msd 6a) wired to the harness, my abs light comes on. if i disconnected the 6a, the abs light goes off. the car runs fine with or without the 6a. the brakes work but the abs doesn't work with the 6a connected. thanks, steve

vfast

are you sure it doesn't work?

Quik

you must of wired it wrong. no reason that should interferr

stvsem

if i mash the brake pedal, i can lock the wheels. if the abs light is off, i cann't lock the wheels. therefore, i feel the abs is not working. thanks, steve

stvsem

thanks for your advice. the wiring is a no-brainer. i used the msd harness to the msd tfi coil and connected the 6a to the harness. it's just a matter of matching the 4 color coded wires. i've checked the ground and hot wire for voltage and continuity. i would think if i'd incorrectly wired the 6a, the engine wouldn't fire. it does run and no missing up to 5500rpm. i'll keep looking around, maybe i'll find something.
thanks, steve

vfast

check the fuse

wildstang87

the only thing i can think of is the signal from the box is messing with the wavelenght from the wheel speed sensor, try this, unbolt the box from the fenderwell (im assuming thats where it is bolted) and set it up by the motor, on the intake or something like that, crank the car and see if that cures it. if so you will have to find somewhere else to mount the box. the wheel speed sensor and the CPS are basically the same sensor, and they could be transfering signals.