well, i gotta a problem, my unlce is a long time racer n thinks this is possible, i just got my msd 6al box n we have it mounted in the passenger side by the passengers legs, but its out of the way so nobody touches it, but anywho, he says instead of going to the battery with the positive wire, we can go to the starter, i dont think so but im just 19.... Also i have a sport comp tach n would like to mount it on the side of my gauge cluster on the right side, whats the easiest ways to route the wires to a positive, negative and a tach source(well to the msd box?) lemme no what ya think
wiring n stuff n such
- Thread starter 88mustang92
- Start date
If you have a stock style starter in your 88, you dont have a continuous battery feed to the starter. A later model mini starter (which came from the factory in about 91) does have a continuous feed.
FWIW, the last box I did was a Crane and you didnt use a continuous feed that I recall. On that one, I made a mounting plate and mounted it under the passenger seat, where you could still access the switches. The wiring can run down the rocker panel and under the carpet to the middle of the floorpan.
For your tach, I'd just run the tach signal wire behind the dash and glovebox to where it joins the wires you ran for your box. Run the wire along with those wires to the box itself.
For power, you can use the ignition switch (under the column) or the fusebox. You can also tap in at the cluster but you have to remove the cluster.
For a ground, find a solid sheetmetal ground and put a ring terminal on the wire and attach it under a screw/bolt.
Just MHO on one way of doing this stuff.
Good luck.
FWIW, the last box I did was a Crane and you didnt use a continuous feed that I recall. On that one, I made a mounting plate and mounted it under the passenger seat, where you could still access the switches. The wiring can run down the rocker panel and under the carpet to the middle of the floorpan.
For your tach, I'd just run the tach signal wire behind the dash and glovebox to where it joins the wires you ran for your box. Run the wire along with those wires to the box itself.
For power, you can use the ignition switch (under the column) or the fusebox. You can also tap in at the cluster but you have to remove the cluster.
For a ground, find a solid sheetmetal ground and put a ring terminal on the wire and attach it under a screw/bolt.
Just MHO on one way of doing this stuff.
Good luck.
bubba-dough
Active Member
If I remember the wiring of the MSD correctly it should have a bigger red lead that has to have a constant +12V, the other red needs to have a switched +12V. If your starter is stock, it's not a constant +12V. Characteristics of electronic components vary so if the manufacturer is calling for 2 different source types, there is a reason for it. As to the mounting questions of the tach, I would hit the fuse box for a +12V source and find a good clean ground, and run the tach wire behind the dash and meet the MSD.
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