Found it for ya, this might be helpful except our tach feed will be hooked up.
Quote:
Originally Posted by howardtm
Dayum! another E serier owner...thought I'd never have company! LOL. I've got an 03 E550..yeah, she's a beastie alright but I love her just the same. Anyway, I installed a full set of guages in mine..including a tach, but had to fabricate my own pod mount for it. BTW..a tach from a gasser WILL work perfectly! Theres a white/pink strip wire coming from the ECM harness..dead-ends anout 6-8" into the harness...as the Diesel God would have it..its a tach feed straight from the PCM. I've been looking at any number of things to help with mileage and power but theres just nothing out there for the E series. In my most humble opinion, get the guages and call Jody at DP Tuner for a 3 pos chip. Best move I ever made. BTW...if you need a pod for tyhose guages, I still have an extra. fits on the dash just about over the heater controls. Made for 3- 2 1/16 guages and a 2 5/8" tach.
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