help 240sx v8 wiring

Post by **lancer_013** » Tue Oct 20, 2009 6:41 am

hi i recently made a v8 swap into my 89 240sx i had the car running on the stock wire harness but i ended up burning one of the wires i think so my questin is to the guys who have done it did u guys order a different wire harness or give me advice of what to do the motor is a chevy v8 350 carb i was think of getting this would this workhttp://www.jegs.com/i/Painless/764/50410/10002/-1

Post by **OutToWinPAHC** » Tue Oct 20, 2009 7:13 am

What wire did you burn and why?

Post by **lancer_013** » Tue Oct 20, 2009 6:26 pm

my check step father had rev umm the battery had shake and the wire right next to umm i guess was on top then all i seen was smoke but do you think the painless one is the way to go

Post by **OutToWinPAHC** » Wed Oct 21, 2009 2:36 am

No you have relays, you have harnesses, wire is cheap, exspecially on that engine.

Just rewire it, do it right, and be careful, fuses are good.

Post by **OutToWinPAHC** » Wed Oct 21, 2009 2:40 am

No you have relays, you have harnesses, wire is cheap, especially on that engine.

Just rewire it, do it right, and be careful, fuses are good.[/QUOTE]

Your car is carbed so you have a starter power wire, and a signal to the starter solenoid, engine ground, oil sensor, electric choke?, and some gauge wiring?

For the started you can use all the Nissan stuff, guages well in the cluster there is 2 ignition power sources for gauges.

Save the 600 bucks

Post by **lancer_013** » Wed Oct 21, 2009 9:58 am

so the wirebox wouldnt b to good cuz idk which wire had burn and theres alot

Post by **540sx** » Thu Oct 22, 2009 3:29 am

the one that burned will have melted rubber around it and be pretty obvious.if you need to power something with a lot of amps it either needs to be a bigger gauge wire.or with a relay. fuse blocks can hold up to a 30 amp fuse. if you are going much higher than this should use a small amp wire from the accesory wire or ignition wire on back of ignition to turn on a relay to pull the power from a larger wire (one of the big white ones) and this should be fused as well to the rating of the relay.

the painless wiring harness would be a waste. If you do not know electrical then it would be in your best interest to do a little research on the internet.can probably fix your burned wire for 30 bucks (wire, spade connectors, electrical tape, inline fuse holder, wire stripper tool) maybe 50 if you need an extra relay.

when I first started mine up, had wired the clutch safety wire for the starter backwards ,so the relay and sent the 50amps back to my clutch pedal and not to starter solenoid.

trying to start the car wondering why the engine was not turning over and suddenly smoke coming from under the dash. wire was was fried.

Post by **lancer_013** » Thu Oct 22, 2009 10:19 pm

yeah idk ever thing was fine till the car had shake and smash the wire i goin try fix the wire i goin try change the wire for c

Post by **lancer_013** » Fri Oct 23, 2009 7:39 pm

so what whats ur guys opnion

Post by **lancer_013** » Sat Oct 24, 2009 1:12 pm

can some of you guys tell me how u guys made urs work

Post by **540sx** » Mon Oct 26, 2009 6:09 pm

I reread the first post and you said you think you burned a wire. you have not actually confirmed that a wire has been burned. what stopped working for you to think that? you are going to need to take your time, there is no quick fix.$35K later I can assure you that it is in your best interest to take you time.

Post by **lancer_013** » Tue Oct 27, 2009 7:40 am

yeah i found out what was wrong it had a small part of wire that was burned and had a very small hair line crack in the ignation switch very small couldnt even tell but yeah im waiting for my raditor comes in then can run umm i also am waiting for this old man to take out a pretty new painless wiring system he said i could have for free if not i goin order

Post by **S14.5silvia2009** » Wed Nov 04, 2009 5:16 pm

wireing isnt too bad if u really understand it and its pretty simple to make the orignal harness to work if u wanted to go that way just get fsm manal to both motors and go to town

Post by **eclipse2001gt** » Thu Jul 19, 2012 10:21 pm

I know this post is like 3 years old but it talks about the 350 sb.

Was wondering if any one could help me out with it.
Has a holley 670 carb with electric choke.
The only gauge that works is the rpm gauge after market. And the clock. Put new gasket for the thermostate and know 2 other gauges stop working. Temp and oil press gauge stop working after doing that. And the battery goes dead after not starting it for 2 days. When i bought it those 4 gauges worked untile the new gasket.
And was woundering if any one knows where a good place would be to wire in the electric choke as of right know it is just zipped tied open so it don't close.

help 240sx v8 wiring

help 240sx v8 wiring

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