Petronix Ignitor Install

[JTO]

Hi Everyone,

I did a search on this topic and found some answers that confused me. It appeared some folks recommended against following the Petronix instructions for hooking up the ignitor leads to the coil. I know little about ignitions so need some detailed help installing this trigger.

I have a 75 911S. Can someone give me a "dumbed down" installation how-to please?

Thanks you,
Troy

[Joe Bob]

First throw it in a deep pond....if it floats it works......

I see those fail out of the box....

[JTO]

Now Mike, that doesn't help me much!

Troy

[voodoo45]

I have my pertronix hooked up to my MSD. Red wire went to the fuse block on the rear left side for power. I then hooked up the Pertronix black wire to the MSD white wire trigger . Seems to be working just fine. The pertronix is a much easier setup than the Crane optical trigger that I had before.

[Joe Bob]

Originally posted by voodoo45
I have my pertronix hooked up to my MSD. Red wire went to the fuse block on the rear left side for power. I then hooked up the Pertronix black wire to the MSD white wire trigger . Seems to be working just fine. The pertronix is a much easier setup than the Crane optical trigger that I had before.

Sorry,I'm an MSD guy....I usually let anyone do what they want...it's their car...just carry a spare set of points....

[Pat S]

I've got it on my 74. Same install as above. Red wire goes to fuse box in engine bay (I used the middle fuse, sport-o I believe, it wasn't being used anyway.) Black goes to the wires that normally connected to the points.

[JTO]

So, In the case of my car, I have a white and a brn wire running from the coil to one of the main wiring harnesses. The coil is also grounded to the fan shroud. I have a wire going to the distributor, connected by a spade connector. It is a wire mesh shielded wire. The wire mesh is grounded to the engine (cam cover) and the interior (under the shield) wire goes toward the main wires leaving the CD etc.

What do I do with the wire connected to the distributor body and I guess the points?

I obviously need more help guys. Thanks for your patience!

Troy

[JTO]

Oh, Mike. I know there have been some negative reports about this Ignitor system. I glad to hear the contrary when it comes to this kind of stuff.

Thanks,
Troy

[Pat S]

JTO,
here is a drawing I made when I rebuilt my CDI harness and installed my pertronix. I didn't document the grounds on the shielding.

The circled area is the connections with the pertronix, the other distrubiter above, is under the points config. In both cases there is a wire that goes to the main engine harness and to the CD harness. This connects to the connector on the side of the distributer with points and will connect to the black wire off the pertronix.
The red wire from the pertronix connects to switched power.

Does that help anymore?


Just to reclarify since the drawing doesn't show it well. The black from the pertronix connects to the two wires that previously connected to the distributer (1 goes to the main harness, 1 goes to the CD harness)

[47silver]

hi
i put one in back in march? it works great.

this may help

[JTO]

Thanks Pat and 47silver (I forgot your name, sorry).

I think this will help me. It is just simpler than I am making it out to be I guess. Silver; I don't have a MSD unit (yet) but the original CD box.

One thing that doesn't make sense yet is that I have one wire leaving the side of my distributor. It is a shielded wire. The shield is grounded to the engine and the main interior wire connects to the wiring harness. Is this the one I want to connect the Petronix black wire too? THe red wire will go to switched power ( the small fuse block where the supplemental heating fan gets its power).

Thanks,
Troy

[BobS]

JTO, I did the same install a few weeks ago. I left the shield grounded to the engine, attached red to power and black to harness just like you are thinking. Has worked fine ever since. I can attach pics if that will help. -- Bob

[JTO]

Hi Bob,

Thanks for the reply. Please post pics if you can!

Thanks,
Troy

[BobS]

I don't know if this will show everything you need but good luck! Again, I did the same install just the other day and was also wondering about what to do with the shield wire. A couple of members of this board helped a bunch. The shield is just an inch (in this photo) to the left of the ignition module and it goes to the engine block while the core goes to module itself (not shown here attached yet).

[47silver]

yes the black wire goes to the cd unit

gary

[JTO]

Thanks everyone. I will try to get this hooked up and see if the thing works.

troy

[}{arlequin]

one more thing to add here... i've done this two or three times now and each time i forget... the nuts that hold the assembly down in the dizzy are NOT METRIC so if all you have is metric sockets, you'll have an annoying problem on your hands.

on the larger sizes, 10mm and above, you can "get away" w/ using an approximate-sized wrench, but on the small ones, one is too big, another too small... i'd have a set of sae sockets handy

[RoninLB]