jpbturbo
Mens Classic Fit Polo
- Joined
- Oct 31, 2003
- Location
- Mr. Lee's Greater Hong Kong #28777
Thats a good wife.
Time to start work on the Megasquirt wiring.
I've got a box full of wiring bits, including a 740 harness of some sort that I may pull wire and connectors from.
I cleaned up the 850 throttle body with some lemon softscrub so it smells nice and fresh and I can pick it up without getting my hands dirty.
It was the only 850/960 throttle body at the junk yard and it didn't have a Throttle Position Sensor so I'm going to try using this old Nissan TPS.
I had a plug that would fit on the tps but the wires were rotted out.
The plug only had two wires in it as well.
I had some spare fuel injector pigtails so I swapped the leads out of those into my TPS plug.
Lookin better.
Next up was the three wire plug for the dizzy.
The plastic sheath and the rubber boot had done their job and the wire was ok but the outside was kind of dirty so I cleaned it up a little.
In this picture you can see how the pin numbers for the plug hide under the rubber boot.
Black = Ground, Yellow = Signal output, Green = 12volt in.
I cut the green wire short because I was going to splice in a 10ohm resistor but I didn't have any of the right value, time for a trip to radio shack.
Because the Megasquirt I'm using is a MS1 V2.2 board set up for MSnS or something I have to connect a resistor from 12v(pin 28 I guess) to the tach input(pin 24).
I decided to just do this on the bottom of the relay board going from the Pin24 lead on the phoenix terminal strip to the switched 12v side of the main relay.
I think this should work