Tried to start today, but no go. Again this is on my non-slick 71 F100.
I am using the RJM harness. Their universal (cheaper) harness.
http://96.0.50.30/harness_manual-K.pdf
Measuring at the ignition coil, I get 12v on the ohm meter with key in ON position. I can hear the fuel pump run for a few seconds as well.
Measuring at the ignition coil, I get 0v on the ohm meter with key in START position. No sounds or noise that I can hear other than the fuel pump.
This was with the original coil that came with the motor and worked 4+ years ago. Replaced the coil with a brand new coil and got the same results.
Yes, the starter is good. Battery reads 12.0 volts. Grounds are good, can hear the fuel pumps run and get just the faintest wiff of fuel back near the gas tank. All electrical connectors and sensors are plugged in
Using the older style 4 post relay on the fender. It is a new relay.
Using the 5.0/HO firing order 1 3 7 2 6 5 4 8 with new Bosch plug wires and new plugs.
RJM instruction # 17, connect orange RJM wire to run wire @ ignition switch. I have the orange wire going into a light purple or lavender color wire. Again, this part seems to work fine.
I have connected purple RJM wire to start wire @ ignition switch. I have purple going into a light blue w/ red stripe wire. nothing happens.
Other 3 RJM wires (Green-Tach, Tan-engine light, Red-2nd check engine light) are not yet hooked up.
So, RJM users, any ideas?