Starter Kill Relays, 20/30 Amp vs. 40 Amp?

whats the difference with using a spst 20/30amp relay verus a 40amp relay? would it effect performance as a starter interrupt ?

starter clicks when trying start sometimes it takes 3 turns of the key to crank. or sometimes theres a 1 second delay when turning the key to starter. or if I hold the key to start it clicks and 2 secs later it cranks. new starter same issue

Bypass the relay to eliminate it as a possibility.

its for the aftermarket alarm. if I bypass I wont have starter cut feature. could it be the amperage of the relay? Its a 20/30amp but they dont sell that in store I only see 30 or 40 amp.

Startermotor solenoids can take 20-30A normally, and double that if the main battery+ to starter is bad or missing. However I expect your relay is controlling a relay for the startermotor solenoid - not the solenoid itself.... As Idiot Esq. wrote - bypass the relay. (And feel for hot wires..) But check that your battery terminals and other heavy connections (grounds, starter & bolts to engine etc) are clean and tight - it sounds a bit like a classic bad battery connection....

everything is clean nothing loose. I was wondering if it could be the aftermarket relay amps . the car has a stock starter cut relay what if I up the relay to 40amps instead of the 20amp

So you have already bypassed the relay and the starter cranks ok?

didnt try that yet . if it does crank ok im assuming the aftermarket relay could be faulty...

Yes - and THEN you can change relays. Otherwise you can just try random things hoping you stumble on the answer. That saves a lot of posting - you only need to post the solution.