Dual Battery - Isolator Ignition Wire Connection

[Surf Fisherman]

I am currently installing a dual battery system in my 94 suburban 350. I am installing a 200 AMP islolator, upgraded alternator to 200 AMP, and beefed up the wire size to 2 ga on both optima batteries. My question...the isolator has Ignition stud connection that needs to be tied back to the ignition switch that must Hot in both IGN and Start. Where do I find that connection point? Your advise is greatly appreciated. Thanks

 

Lu

[citydriver]

'94-'95 are change over years. I installed another batt. on my '95 and installed the relay in the stock position on the drivers side inner fender, under the hoods hinge. The factory wire harness for the relay is also there for the factory isolation relay and is POWERED. I'm not sure if the '94 is in the same position but it may be worth a look. There would be 2 wires with spade connectors taped to the wiring harness that comes from the bulkhead connector, one is a ground for the relay, the other is powered by the ignition circuit, you could use this one for your application, but I would suggest testing it with a test light to check them.

[Surf Fisherman]

'94-'95 are change over years. I installed another batt. on my '95 and installed the relay in the stock position on the drivers side inner fender, under the hoods hinge. The factory wire harness for the relay is also there for the factory isolation relay and is POWERED. I'm not sure if the '94 is in the same position but it may be worth a look. There would be 2 wires with spade connectors taped to the wiring harness that comes from the bulkhead connector, one is a ground for the relay, the other is powered by the ignition circuit, you could use this one for your application, but I would suggest testing it with a test light to check them.

 

 

Thanks for the tip...Iwill check it out and see. I will let you know.....if it works on my 94.

 

Lu