The switch wire would most likely fire the relay to power all the pink leads going to the PCM.
Yeah, do the 8 gauge since the fans seem to be powered by that fuse block.
About all you have to use from the original harness is the switched power wire from the keyswitch and the purple starter lead. The rest can go away except a/c leads if you have them. Oh yeah, save the oil pressure, water temp and alternator leads, too.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
OK so keep the switch wire from the truck and connect it too the 12v sw on the harness but the purple starter wire from the truck goes where??Originally Posted by RedHeartbeat
this might seam retarted BUT!! "Oh yeah, save the oil pressure, water temp and alternator leads, too" where do i hook these up are these on the modded harness !!
sorry for all the questions!!!
yeah im not about to bad mouth anyone online i will contact the guy personal tell him what i think then if i get a sh!@%y reply , they i will tell him what i think but i will say watch out for people offering there services on ebay!!
The problem with small time harness builders is they leave so much to be desired.
Large gauge purple wire from the truck goes to the starter solenoid.
You'll need a water temp sensor from your stock engine. You can put an adapter in the passenger side head at the rear, there is a plug capping off the hole similar to the drivers side location.
You'll need an oil pressure gauge from the original engine. There is an oil return cover bolted to the driver side of the oil pan and it can be tapped to install the oil pressure sending unit.
The alternator lead can be tied into the small gauge wire on the alternator if its just one small gauge lead on the connector. Are there two connectors going to your alternator? Is there a large gauge wire going to the alternator from a battery source? There should be. If you don't have one you'll have to get something.
Do I need to drive over there and install that thing?
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
i tell you what i will fly you up here, Maine is nice this time of year nice but getting cold!!!!!!!! LOL thanks for your help !! i reall appreciate it !!The problem with small time harness builders is they leave so much to be desired.
Large gauge purple wire from the truck goes to the starter solenoid.
You'll need a water temp sensor from your stock engine. You can put an adapter in the passenger side head at the rear, there is a plug capping off the hole similar to the drivers side location.
You'll need an oil pressure gauge from the original engine. There is an oil return cover bolted to the driver side of the oil pan and it can be tapped to install the oil pressure sending unit.
The alternator lead can be tied into the small gauge wire on the alternator if its just one small gauge lead on the connector. Are there two connectors going to your alternator? Is there a large gauge wire going to the alternator from a battery source? There should be. If you don't have one you'll have to get something.
Do I need to drive over there and install that thing?
ok so i went out to the truck this morning and took out that plug on the PASS side here is a pic below the adapter srews into this right??
ok the second pic shows what i think your talking about do i pull this off and tap out the hole???
as for the ALT there is a black wire that goes to a red box on the side of engine this wire is connecr to the POS terminal wire for the battery
on my truck harness there is a ALTwire tooo
yes and yes.
The main Alt power lead is good. The connector going to the Alt, how many wires are in that connector? BTW, what year and size engine is this?
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
here is an alternative to using the hole in the back of the head. I drilled and tapped the waterpump for the original sensor.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
the engine is out of a 2000 tahoe 5.3, the ALT plug has 2 wires gray and brown but there is 4 pins on the ALT where this plug goes into
my truck was a factory diesel truck (1978) there seam to be more than normal wires the is one thick one thats for fuel solinoid and another that is red that goes to a juction on the firewall ???
Rarely are all the pins in the alternator plug used.
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