We want to make these steps up to the piggyback relay box or those 3 relay connectors at the top of the ECU. That is a 3 way relay. So you want to see power to the one relay is either red or white being the hot side is why you want that needle probe.
http://ts2.mm.bing.net/th?id=H.4649771178198497&pid=15.1
Behind the connector are those rubber weather-pac inserts. You stab the needle from behind into those rain protectors. This way we have to walk our power lines from battery to starter main fuse to keep reading the red or white colors for hot are the wires and a thicker gauge wire too.
So, we want hot-hot-hot into 3 relays in that big ECU rubber boot way in the back. Then, we want to see if we have power to the ECU? Pg. 16-108. Middle plug... Probe 6 or 5. This is main relay, right? Get it? We walked:
1. Battery post integrity
2. Hot out of battery to relay.
3. Needle probe is stab the fuse on the one end, stab the fuse on the other end so there is no doubt even if the fuse looks good... Got it?
4. Main relay probe, but we skipped the fuse boxes and cross stabbing those just to make sure the female ends have contact, we be killing two birds with the fuse and female prongs making good contact.
5. Understand we leave the power plant and lay line out of the building? Up to the power lines, down to a sub station, out to some house/factory/ect., your fuse box outside the house, your wall socket with an A/C meter checking current.
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