70HP Chrysler Wiring Problem

[kaptnkangaroo]

Hello, I am new to the forum and to boats in general. I am a mechanic though and am hopeful I can get this engine running. So here is my problem.
Engine cranks but no spark. I have checked a lot of systems so far and can't find any defective parts. I looked under the "dash" and noticed that I had a
few wires dangling. I bought the chrysler service manual only to find out that it doesn't tell you where these wires are supposed to go!?! Can anyone help me out? There are 8 wires. Yellow/Black, Purple, White, Green, Orange, Red, Blue, and Black. So far the only ones I know are the 4 for the ignition switch.
Yel,Grn,Red,Blue (as per the manual). Oh, and im not sure on the year, but it is a 707HF model engine with the Motorola ignition. Any help would be great, thanks.

 

[Frank Acampora]

Re: 70HP Chrysler Wiring Problem

If it is Motorola ignition, then the wires you need connected to the ignition switch are "B" or BAT terminal---RED (POS) "I" terminal--Blue wire, "C" terminal---Green wire, "S" terminal---Yellow wire.

Purple is unused, orange is overheat indicator, White is tachometer signal, and black is a common ground used for gauges etc.

If you suspect a bad switch, jump on the engine terminal board red to blue. This will supply power to the Motorola box. If you then get no spark, check the distributor.