H&S Mini Maxx Installation Manual - Fuse Number 15
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Keyed ignition Source location
Although it is possible to manually power up the Mini Maxx without using a keyed ignition source,
it can sometimes create communication issues between the Mini Maxx and the vehicles ECM. To
eliminate these problems, we highly recommend tapping into a 12V keyed ignition source to sup-
ply power to the Mini Maxx only when the key is in the ON position and the vehicles ECM is online.
Below you will find a commonly used 12V keyed ignition source for your vehicle:
fUSE nUMBEr 15
Always tap into the cold side of the fuse. On the
2003 - 2007 6.0L Powerstroke, the cold side is towards
the driver side of the vehicle.
nOTE:
If your fuse box or wiring looks different than those pictured
or if you are not getting 12V ignition power from the pictured source,
you may need to find another 12V keyed ignition source using a test
light or multimeter. If possible, find one that stays hot during engine cranking.
Pyrometer (EgT) location
If you are installing an optional H&S pyrometer kit on your 6.0L Powerstroke, you have
the option of installing it pre-turbo or post-turbo (or both if you purchased an additional
thermocouple).
For the most accurate EGT readings, we recommend installing the pyrometer pre-turbo in
the driver side exhaust manifold as seen below:
nOTE:
The driver side exhaust manifold can be easily accessed from
underneath the vehicle. Be sure to drill straight into the exhaust
manifold otherwise the pyrometer probe may hit the manifold wall
during installation.
For those wanting to install the pyrometer post-turbo, we usually recommend doing so
somewhere in the downpipe.
nOTE:
The downpipe is pretty thin in most places, so be extra careful when tapping and installing the probe fitting.
Post-turbo EGT readings can be up to 400 degrees cooler than pre-turbo EGT readings. Keep that in mind when
monitoring your EGTs with a post-turbo pyrometer.
6.0L Pre-Turbo Mount