2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

ques. about "black box" condenser near coil.

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Old May 18, 2004 | 06:52 PM
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From: fresno, ca
ques. about "black box" condenser near coil.

i want to know what it does. I just bought an 88 TII. The black box is broken. the ring is still connected by the bolt on the coil but the box and wire are broken off of the ring. Do i need a new "black box" if so where do i get one? Or can i connect the wire directly. Thanks.

Last edited by cjbechtel; May 18, 2004 at 06:54 PM.
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Old May 18, 2004 | 06:58 PM
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From: Coldspring TX
it protects the circuit from unwanted electrical "noise" caused by the plug wires...
Mazdatrix has them...
DO NOT short the wire to ground...
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Old May 18, 2004 | 07:05 PM
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From: fresno, ca
any performance drawbacks to not having it connected
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Old May 18, 2004 | 07:09 PM
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From: Coldspring TX
since the igniter signal voltage from the ECU is on the order of 5 (I think) volts, any EMF-induced voltage spikes occuring in the wiring MIGHT trigger an unwanted spark firing, I'm not sure...Only thing I am sure of is it's there for a reason...
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Old May 18, 2004 | 07:11 PM
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From: Coldspring TX
Oh yeh, it's also protecting the wiring for the 4 injectors...
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Old May 18, 2004 | 07:13 PM
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do you think i can get one locally, a generic unit perhaps?
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Old May 18, 2004 | 07:19 PM
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sure, if ya know what you're looking for...there was a thread on a replacement capacitor for this a while back, see if you can search it out...I know I saw it on the Mazdatrix parts list, though...
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Old May 18, 2004 | 09:31 PM
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Yeah, I started the tread... Hold on...

https://www.rx7club.com/showthread.p...ight=capacitor
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