OT garage question, replacing coil pack with a disty on my boat Options

[malcolm2]

Question for the smartest motor heads I know here on 914world.

My 92 ski nautique has a ford 351, holley 4 barrel and OEM Pro-Tec coil packs. I get ZERO spark. The boys on the boat forum set me up with a D.U.I electronic marine disty and the know-how to use some of the coil pack wiring to run it. 2 wire disty, 12v and tach.

Word is the Davis Disty needs 10.5 volts to spark. I have not tried to start it yet, wanted to get the 10.5 first then set the timing and be done.

OEM wiring is as follows.



they want me to use a wire (P, 3A below) coming off of the 12.5 amp breaker in the btm middle of the photo.

I checked the following.

1. at the BATT voltage with key on = 12.38V, key to start = 11.09V
2. TOP RELAY POST (batt wire) key off or on 12.49. Start 9.7
3. RELAY POST to 12.5 breaker key on 11.5. Start 8.2 ( blue circle, i think)
4. RELAY POST TO NEUTRAL SWTCH key on 0. Start 7.8
3A. P WIRE key on 11.5. Start 8.3 ( this wire comes from the 12.5 breaker )

Does all this seem normal? Is my 23 old relay or starter draggin down the voltage.

my relay is upside down... batt comes in on top... otherwise the same.