I seem to get brain-lock when doing electrical wiring sometimes...

Where, in my existing n2o wiring, should I connect the enable/switch wire for my timing retard?

I have a main n2o system enable button->n2o arm->WOT switch->RPM switch. The WOT & RPM switchs may be reversed, I can't remember.

Anyway, should I be able to wire this retard wire into this existing circuit and have it enable when that circuit closes (i.e., when the nitrous sprays)?

For some reason I can't seem to figure this out.

Thanks for any help you can give...

 

OK, some more info...

It looks like the circuit goes n2o main->n2o enable->RPM window switch->WOT switch->relay for noids.

So, if I only want the timing retard module active when all the above are enabled, I should wire it in the closest to the relay, correct? So it will only see a closed circuit after all the previous switches engaged.

Am I thinking correctly? Is that how switches work?

Because I think I tried touching the retard module switch wire to the switch wire on the relay, and it enabled the retard, even when the WOT & RPM window switches weren't engaged.

HELP!

Thanks,
Solomon

 

Your timming retard will get triggered by the nitrous solenoid wire.

 

JWINN,

I've tried this and it won't engage. My solenoids are triggered by 12V from a relay. If I touch the retard switch wire to this wire on the relay, and then engage the solenoids, the retard does not engage.

Any ideas? Thanks for the help so far.

 

What retard box are you using? I use the MSD 7 dig. and the retard is built in and triggered by a 12V triggerd source. I would assume your using a seperate MSD retard box. These old box's if I remember correct would only work if the ground is removed.

What I think is possibly throwing this off may be cause by the way your wiring into the relay. You SHOULD NOT be wiring this retard to a relay. Some retards are triggered by the ground being removed. I suspect the nitrous kit is wired incorrectly to work with a retard. I don't mean the nitrous wiring is wrong to operate the system but sometimes you have to wire the system differently to operate other devices. Your kit could be wired a few different ways.

Consider wiring the nitrous kit with throttle activation switch completeing a ground wire. You can splice the throttle activation switch into the white wire that goes to a ground which should be terminal 85 on the relay. The throttle switch is probably wired into the black wire connected to the 30 terminal of the relay now which would more than likely be hot? Like I said pull the switch and fix the black wire and move the switch to the ground wire. From this point you will have your triggered ground for the retard box. This should work now.

If this doesn't work let me know. If I can wire a two stage nitrous kit using a total of 8 solenoids consisting of 4 nitrous solenoids and 4 fuel solenoids a purge valve and pull timming out on each stage being activated I hope for my sake I could figure how to get your kit working.

Good Luck!

Jim

 

Jim,

Thanks for your help.

Before I read your post, I figured it out.

Like you were thinking, this retard box (an Accel 4-stage/input retard) operates the n2o section via breaking ground. Well, my n2o system was wired to switch the 12V, not ground.

So, what I did was use one of the other 3 inputs on the retard, which are triggered by switched 12V (meant for shifter switches). I connected the switch to the switched 12V coming from my noid relay.

Of course, now it works great.

Thanks again for taking the time to type that all out.