Hooking up Secondaries motor

SlvrACR · Post by **SlvrACR** » Sun Mar 04, 2007 5:37 pm

As I posted I installed a Magnum Intake on my friends 02 SXT. Now I went to wire it and cant seem to get it to work. I am getting a good tach signal but I cannot figure out how to hook up the relay. I am only using an RPM switch and not WOT switch. I know it has been done this way but I cant figure it out. Also is the Red + on the magnum motor??
Ive read the howtos but im still stuck lol

fixitmattman · Post by **fixitmattman** » Sun Mar 04, 2007 7:15 pm

Just to confirm, is it an RPM switch or an RPM window switch like in the .org sticky? Also, what are the labels for the wire colours on the RPM switch. If the labels aren't written on the case it'll be in the instrucitons.

SlvrACR · Post by **SlvrACR** » Sun Mar 04, 2007 7:40 pm

Its the RPM switch. Its not a window switch. Its the MSD one like most people use. The instructions arent that great from summit

fixitmattman · Post by **fixitmattman** » Sun Mar 04, 2007 7:44 pm

OK, that's one thing down. I could guess on the wire colours, but I don't want to. What I really want to know what each wire colour on the RPM swich does. It's pretty obvious black is going to be ground and red is going to be +12v. That leaves the yellow and the grey are the switched circuit, but I'd kinda like to know what they're labled before I draw up the connections. Most times it doesn't matter, but sometimes it does. Tell me what yellow and grey are and I can fill this in pretty quick for you.

SlvrACR · Post by **SlvrACR** » Sun Mar 04, 2007 7:50 pm

Im sorry its the summit version of the MSD. Here is the link with instructions.

http://store.summitracing.com/partdetai ... SUM-830449

quicksilvr · Post by **quicksilvr** » Sun Mar 04, 2007 8:28 pm

If it's the same as the MSD, then yellow is Normally Open, and gray is Normally Closed.

You'll only use one or the other, and it depends on how the switch works. On my switch, I have to use the gray wire (NC)...otherwise the butterfly's would be open between 3k-5k...instead of before and after.

fixitmattman · Post by **fixitmattman** » Sun Mar 04, 2007 8:42 pm

SlvrACR · Post by **SlvrACR** » Sun Mar 04, 2007 9:02 pm

Thanks so much for the help. Ill try this tomorrow and report back.

fixitmattman · Post by **fixitmattman** » Sun Mar 04, 2007 9:08 pm

Actually, I just double checked the summit spec sheet. I hate the wording on that, but it's how quicksilver described. You won't need to hook up the grey wire to ground.

SlvrACR · Post by **SlvrACR** » Sun Mar 04, 2007 9:11 pm

One other question, Can 30, 86 and the RPM switch be hooked up to the same 12 volt?

fixitmattman · Post by **fixitmattman** » Sun Mar 04, 2007 9:24 pm

Short answer is no.

I would be careful on where you choose to draw the power for #30 from as that's the +12v that's going to power the manifold motor. Stock in the R/T it has a 15A fuse for a reason. My suggestion for the #30 would be to draw that directly from the studed terminal from the engine compartment fuse box (pretty much straight off the battery), and stick a 15A inline fuse in there for safe measure. The #86 and the +12v for the RPM switch are both very low current draws and you can tap both of those together into the fuel pump relay, ASD relay, or anything else that's going to be running only when the engine is.

SlvrACR · Post by **SlvrACR** » Sun Mar 04, 2007 9:38 pm

Ya thats what I was thinking. Thanks for the heads up

FTWNeon · Post by **FTWNeon** » Sun Mar 04, 2007 10:34 pm

Some good information. Let me know how it works and I may Sticky this.

Post by **Diablo0** » Mon Mar 05, 2007 12:40 am

Have you checked out this thread in the How-To section?

http://forum.2gn.org/viewtopic.php?t=3048

SlvrACR · Post by **SlvrACR** » Mon Mar 05, 2007 6:35 am

Yes but seeing that Im not running the WOT switch I couldnt figure it out for some reason.

fixitmattman · Post by **fixitmattman** » Mon Mar 05, 2007 11:37 am

WOT switch is easy to add to that.

Po12no · Post by **Po12no** » Mon Mar 05, 2007 4:02 pm

OK he hooked a meter to it and it gets 12v but I cant hear it open. I can touch the motor to the battery and hear it open and the motor is new. Got any ideas?

fixitmattman · Post by **fixitmattman** » Mon Mar 05, 2007 4:07 pm

Get's 12v from what?

Po12no · Post by **Po12no** » Mon Mar 05, 2007 4:10 pm

The #87 on the relay, but when he hooks the motor to the #87 you cant hear it open
EDIT\
Well we believe the relay maybe f'ed so we are trying that first. Ill post in 15 mins once we get a better one lol

fixitmattman · Post by **fixitmattman** » Mon Mar 05, 2007 4:37 pm

If you're using 5 pole relay, there will be an #87a terminal as well. If you put it on that one it will work backwards, so be sure to put it on #87.

Po12no · Post by **Po12no** » Mon Mar 05, 2007 5:07 pm

New relay and still nothing. IDK what else to check

Po12no · Post by **Po12no** » Mon Mar 05, 2007 5:37 pm

Well we have come to the conclusion its prob the Summit Switch. We are goona send it back and try another one

fixitmattman · Post by **fixitmattman** » Mon Mar 05, 2007 7:05 pm

Check the RPM blocks, I know they were a PITA to set up on my friends. I can't remember if you had to set all the switches up to the RPM you wanted, or just the one. Also remember depending where your tach signal is coming from, the PRM set point may need to be halved.

SlvrACR · Post by **SlvrACR** » Mon Mar 05, 2007 7:13 pm

Ya I got that working on it but it seems to not be working correctly. I got everything hooked up and technically it should be working but it wasnt. He is just gonna get another one.

anomalous0 · Post by **anomalous0** » Wed Mar 07, 2007 1:02 am

2 points. One, if you're using the yellow wire, try using the grey wire instead. (or was it the other way around.) Second, I couldn't get mine working for almost a week, and finally I realized that the problem was not the tach or the manifold, but the relay I had bought. Just randomly got a bum relay from radio shack. Replaced it with an autozone SPST and was good to go. Just a simple on/off switch based on RPM. If I want to do the WOT part I can always just wire that in later with another relay inline to this one.

SlvrACR · Post by **SlvrACR** » Wed Mar 07, 2007 6:39 am

Relay was good and I even tryed another. The yellow and grey wire both didnt work. Also the yellow was only suppose to throw power when it hit the RPM and when I checked it with a meter it always had power.

fixitmattman · Post by **fixitmattman** » Wed Mar 07, 2007 12:55 pm

Yellow doesn't throw power, it completes the ground.

SlvrACR · Post by **SlvrACR** » Wed Mar 07, 2007 4:47 pm

Ok well this was giving out 12v lol Thats why I said just take it back.