Neutral safety switch and fuel gauge on 98 swap

[ChevyLee]

The wiring would have made me throw the truck away, thats why I gave it to Allen.. GL with it

[Wtfan18]

The wiring would have made me throw the truck away, thats why I gave it to Allen.. GL with it

well it really isnt all that bad the worst part is having 2 harnesses in the truck right now its SO cluttered i cant wait to get rid of them. but honestly all there really was to hook up was the fuel pump,battery,ignition,ground,reverse backup light(didnt bother) and neutral position switch wire (for auto trannys) and then the PAIN IN MY ASS starter solenoid wire... i dont have a damn clue what the problem is... i may have to call NP and see if they can help. i dont believe its anything to do with the harness but maybe they can help me trouble shoot... i just dont get it... everything else seems to work. and the truck runs... cam sounds good need to weld up my exhaust so i can actually hear it lol the manifolds are damn loud. i have a question for you guys though.

does anyone know for sure if the 5.7 fuel pump will supply enough fuel pressure at WOT to not starve the motor? it seems to run fine and when i rev it its really really snappy, very quick and responsive.

oh and also. the 02 sensors i was planning to use i pulled off the 5.7 vortec as well the plugs are exactly the same as the 5.3 harness is this a safe thing to do or not such a good idea?? they seem to be in great shape. i already welded the bungs into my Y pipe i just need to figure out wether these will work fine? thanks guys

[RedHeartbeat]

The V8 Vortec pump should be fine.

The reason the starter may not be working is you may have cut the wire that fed voltage TO the starter relay when you disconnected the wiring harness from the original engine. Every relay has four basic connections, ground, trigger voltage, power in and power out. See which of these is missing. The starter relay may use the ground as a triggering device for the relay, if so then the power to the relay could be jumpered off of the power input from the battery to the relay making it more or less a 3 wire setup.