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Charge battery- drive and die

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Just swapped in a new motor- maybe I missed hooking something up?

The battery drains as I drive down the road and the lights dim- dash goes out and the headlight is last to go out - lasts 40 mins and then eventually the bike won't run at all and I'm walking.

I changed the rectifier - the finned thing and everything else seemed good before. UPDATE- NO I DIDN'T :thumbsup:

How do I test charging system for shorts?

What else to look for?

Edited by RealtorGordonB

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At the top of the forum in the FAQs, there is a terrific write up of how to test the stator and charging system. Also take a look at and do the 'free power mod'.

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Thanks for the tip on where to look :thumbsup: I have a very new larger size battery - I hope it's not dead- I left it inside for the winter and kept it charged.

I remember reading about the power mod before mothballing the DRZ a few years ago. I will try to get it done this time.

Edited by RealtorGordonB

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make sure you have a good connection from the stator. while un likely the connector can either come loose or broke during swap.

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make sure you have a good connection from the stator. while un likely the connector can either come loose or broke during swap.

How about - bang on the money.:thumbsup:

How about I did miss something when putting it back together :busted:

Thanks to William1 I read the FAQ on electrical system. Strip tank and side panels and etc off. It suggests checking system with volt meter and I'm thinking I would have to buy or borrow a volt meter tomorrow as I have never owned or operated one.

But in the meantime I'm checking every plug and tightening all connections and I come across those same 2 useless empty plugs as when I put motor in 1.5 years ago. My old chevy has unused plugs- I thought this may or may not be the same.

Then I'm searching the bike everywhere for the rectifier- wow .. they sure have this thing hidden, maybe I can check manual where to find it or look online- so I look in parts box.... and I find I didn't swap rectifiers- I removed it from the frame and somehow thought I had 2 and one was on the bike- there was only one in the box :smirk:

I almost came inside to post and ask what those plugs are for. I look in the parts box and the rectifier has 3 yellow wires just like one of those unused plugs- awesome. :confused:

Mystery solved- I'm no mechanic and this is only my second motor swap- thanks to the TT gang- AGAIN.:worthy:

I left it apart so i could do the power mod tomorrow.

I was sure surprised how quick my battery was dying.

I pray I didn't kill it in the process.

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Anybody smart enough about DRZ electrical to comment whether having rectifier disconnected(not in the circuit) adds to the speed of battery draining.

The battery went dead so fast and completely.

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yeah that will do it mate. Without the reg. rec. your not charging your battery at all and just running a total loss sysytem like some race bikes. i've seen a drz batt go flat in 20mins of riding when a reg. rec. went up the pokey. plug her in and your good to go.:thumbsup:

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If the Reg/Rec is working fine you don't even need the battery in the bike. I had a catastrophic battery failure about 85 miles from home. (two dead cells on a 2 month old battery that died in the middle of a trail). Bump start the bike, headlight works fine, gauges flicker, but it had full power and zero problems. The battery seems to be more for the gauges and e-start and not to keep the bike going.

Frankly, I'm glad it does. being that far back in the woods as the storms moved in wasn't gong to be pretty!

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