the350z Posted June 21, 2016 Share Posted June 21, 2016 Looking for a wiring diagram to completely rewire the small block in my Z! Haven't had any luck with specifics or a good diagram so any help would be appreciated. Is a 70-74 350 small block. Just blew my starter (terminals off the battery were red hot after a nice cloud of smoke came out from under the hood), and I ran threw some of the wiring under the hood and it was horrible. Planning on ripping all the old wiring out completely as 95% of it isn't hooked up to anything at all. My headlights are already hooked up independently to a toggle switch and I was hoping to run the starter and ignition to a toggle as well. Any help is appreciated Quote Link to comment Share on other sites More sharing options...
Miles Posted June 21, 2016 Share Posted June 21, 2016 The most complete engine wiring instructions are in the JTR Datsun Z V8 conversion manual. http://www.jagsthatrun.com/index.html Quote Link to comment Share on other sites More sharing options...
claymann Posted June 23, 2016 Share Posted June 23, 2016 When you remove the old wiring how do you keep the wires from the battery because mine look like they are routed into the ecu. Quote Link to comment Share on other sites More sharing options...
Miles Posted June 23, 2016 Share Posted June 23, 2016 ECU? What year is your Z. Helps if you can be more descriptive and precise in your posts. Can you post pictures? Quote Link to comment Share on other sites More sharing options...
crapforum Posted July 5, 2016 Share Posted July 5, 2016 Uhhhh wiring diagram on a SBC? There is only a ground to the block, hot to the starter, and then a trigger from the key to the starter....... Quote Link to comment Share on other sites More sharing options...
the350z Posted July 5, 2016 Author Share Posted July 5, 2016 Hei distributor isn't connected to anything but the battery? Quote Link to comment Share on other sites More sharing options...
bramagedained Posted July 5, 2016 Share Posted July 5, 2016 (edited) Two wires from the HEI(the cap itself is marked, or should be). One is switched 12v when the car is on "Run" or "Start", the other is the Tach signal. One wire each from Oil Pressure and Water Temp senders for the gauges. Two wires to the starter. One heavy +12v from the battery and a smaller wire that runs to the solenoid from the starter switch. One or more heavy gauge ground wires should be attached to the block in some way. Alternator might have one, two, or three wires depending on which type it is. That is all assuming you have a carb'd SBC with an HEI. Edited July 5, 2016 by bramagedained 1 Quote Link to comment Share on other sites More sharing options...
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